You haven't SHOWN me anything. You've referenced subreddits but provided nothing substantial.

What substantial thing do you need? It seems to me everything I've said is pretty uncontroversial but let me know what you disagree with.

• /r/AskHistorians has strict rules on what can and cannot be posted/commented and will enforce them quickly and harshly
• /r/ShitRedditSays has strict rules based on opinions and if your opinion is even slightly off the subreddit's approved opinions you will be immediately banned
• /r/politics, which is supposedly about all politics, is actually an anti-Republican circlejerk where no real discussion between party supporters can happen and has been this way for years. The main place where rational political debate would happen has made sure discussion does not happen well before /r/the_donald
• conservative subreddits would be heavily influenced by liberal Redditors if they allowed anyone to join without banning troublemakers or potential troublemakers
• banning people who break subreddit rules happens in every actively moderated subreddit.
• Subreddit moderators have full authority to create the rules and focus of their subreddit.
• you listed /r/the_donald specifically twice in your post and called it the catalyst for change in Reddit and that Reddit had better political debates before /r/the_donald

These are the claims I've made to back up that I think you are wrong. Which of these do you disagree with?