The more exposure the better, even if it is annoying. The state of American politics is atrocious. He is the only candidate that even talks about [insert any change to the system you want here], among other important issues that are ignored.
I don't know, maybe you're too young to remember, but this is exactly the attitude that people had about Obama. Then Obama comes to office, twice, and after 6 or so years some change happens (affordable care act). Compared to the original message, this change is so minor that it really seems like more of a drop in the bucket. Some people love it, some people hate it, most are annoyed by it - if most people weren't annoyed by it, at the very least then Obama's fellow party members wouldn't be talking about making further changes to the healthcare system.
The point is you and hundreds of thousands of people, if not millions, are doing the same exact thing that happens every several presidential election cycles: you're rallying against a person who acts as though the president has more power, on a day to day basis when there are no emergencies and no supreme court justices retire, than doing the written equivalent of clicking "ok" or "cancel" on a sets of laws. Seriously, that's all the president does. If you want new laws to happen, then you really have to worry about the Senate and Congress.
Bernie is no different than Trump, at the end of the day. Both guys are telling you how they're going to make the US a great country, except Trump decided to make that his official slogan - from a marketing perspective for businesses, that's actually a pretty reasonable move, but that's besides the point. Bernie and Trump just trim their version of what needs to be done to make the US a great country to suit the different demographics that they try to appeal to, but the idea is the same for the most part: America will be great once y'all have more money. Bernie talks about making health care cheap and having a "less corrupt" government, because he appeals to people who primarily pride themselves on their intellect and feel they can understand complex problems. Trump talks about reducing the threat of a super cheap workforce in the US and bringing jobs back from Asia, because he appeals to working class people who do actually live with the real threat of losing jobs to illegal immigrants, and to skilled laborers and upper-middle class people who have a justified fear that their jobs might get outsourced to Asia. Both candidates promise to solve big problems that bother different groups of people, when, in reality, neither candidate has the power to do so.
The way I see it, the solutions to the problems are as follows:
You want truly affordable health care? Demand that doctors not be allowed to charge ludicrous prices. The first step to that is to make college and med school affordable. How do you do that? Make colleges be about education, rather than football and basketball games. Every time you buy attend a college game or watch it on TV, you support a system that puts colossal debts on doctors, which later contributes to your huge bills (also you contribute to a cause that many colleges use to justify their tuition). Similarly, a huge cost of medicine is malpractice insurance - this needs to end. American doctors need to know that a single mistake can cause them their career and potentially their freedom - if people don't feel like they could deal with tat, then they shouldn't go into medicine. Also, Americans need to be taught that being lawsuit-happy is shameful. There's no such thing as easy money.
Talking about there being no easy money... People want secure jobs? Well how about working for them? A colleague of mine recently got back from a business trip to China, where he assisted a client (who you definitely know) with the manufacturing engineering of a product (that you also know and can buy in the US). The work day in China for an average engineer is 10-14 hours long. The work day for an average engineer in the US is 8-9 hours long, 10-12 if something comes up. The engineers in China are willing to work for half the price as well. So in China, you get roughly 4x the amount of work per trained specialist for the same amount of money. This is much greater for manufacturing floor workers. Until Americans are willing to work harder and better than anyone else in the world, jobs will not start coming back to the US. In the first two-thirds of the 20th century, people in the US did worker hard and better than anyone else in the world. That's what built the empire that we live in today. Will working as long and for almost as little as people do in China (and illegal immigrants in the US, for that matter) reduce quality of life for most Americans? Yeah, of course. But only temporarily. Once corporations see that they can't charge $45,000 for a pickup truck, they'll start charging less. If the US workforce voluntarily begins to aggressively compete with the international work force, they you'll see sizable deflation in the US economy, which would actually help anyone who has any decent savings to retire prosperously. Likewise, that would likely ensure prosperous retirement for future generations, since GDP would go up and possible help balance the federal budget and put money into Social Security.
Regarding claims of corruption in the government and proposed ways to fix it... Where does corruption come from, on the presidential campaign level? It comes from the insane cost of a campaign. This is a self escalating problem that is caused by the party system. Parties pour millions and millions into candidates. Then, after every election cycle, the losing party tires to raise more money to win next time. Rinse and repeat until we're dealing with such insane amounts of money that both parties and candidates start turning to corporations and rich individuals to fund them. If you're not satisfied with this system, then refuse to vote for anyone who is a member of a party. Refuse to vote for anyone who isn't entirely self financed and refuses donations. Powerful messages of truth are heard without organized publicity campaigns. If that weren't the case, then no one would have heard of a book called To Kill a Mockingbird. That book went against everything the majority of people supported, but it's message was true and right.
There's a common thread in all the above ideas: the solutions to pressing problems in the US are not to have the president step in a work his magic, but for people to change how they act. That's the actual beauty of democracy. The people have real power, but they also have the choice not to use it if they don't want to. It's a bitter pill to swallow, but there's only one reason why anything can be called "atrocious" in this country: it's because the majority of people in this country are to lazy or too absorbed in their hurt feelings to actually do anything productive about it.
The thing is, I'm Russian. My family moved here several years after the USSR collapsed. The USSR collapsed for the same exact reasons that some people think that certain aspect of the US are "atrocious". Most Soviets just stopped giving a damn and figured the government would solve things. Politicians started talking about change, people supported said politicians, and political change came. But, despite the legally organized revolution of '91 and the political change that came with it, the people were still as selfish, mean, and mostly lazy as they were in the years prior. Enter the "mean 90's" as Russians call them (wikipedia just refers to this time as "Crisis"). Thing only got better when a the people democratically elected an autocrat who brought Russia out of crisis-mode into things-are-sorta-ok-for-the-most-part-mode. I really don't enjoy the thought of the US entering a similar situation over the next 20-30 years.
Sorry if this is fairly long rant but, seriously, if you really want to see some change in the country look for ways that you can bring it about instead of relying on politicians to do it for you. This is a democracy; at the end of the day, you're in charge.