I got banned from r/running for asserting the idea that one day a woman will be the fastest person in the world (on a post about unpopular opinions) and then warding off an attack by the OP.

As a dude who is escaping a history of posting on 4chan, I can say Reddit is a lot more volatile. On 4chan when someone makes an abomination of logic, it fades into the background of the hivemind and you just sort of accept their right to troll/be wrong. On Reddit the some people are more concerned that what they say will be popular, which steers conversation around the truth until everyone appears willfully ignorant. There's also the issue of permanence where whatever typed needs to at least appear factual so that even after it's spiked to the frontpage everyone still can digest what has been said without being part of the meta. This leads to oversimplification of complex topics or reaction bait where the only meaning provided by OP is "Thing happened, pun, are you happy?"

Because posters expect gratification they can build upon, when they perceive something that they have no experience with and invokes bad feelings, they also may end up deciding that the post is wrong and the poster must be convinced of their wrongness with whatever fodder seems like it will stick. Subconscious biases boil to the surface and when their fallacious attempts to "help" the OP fall short, you end up with in this case, misogyny, or otherwise (at best) ad hominem. Where this happens repeatedly without emotional progress from the aggressor, the "helping" phase can be skipped and compounding immortality ensues. These behaviors also foster a culture of exclusion and bullying.