The actual alt-right political movement is just a very small group. I don't think many outside of that small group actually hold the racist and misogynistic views that are expressed on these forums. It's often just backlash at the rapid change in culture. People want to break the new rules of discourse.
The bigger problem is genuine right wing views then get lumped in with the alt-right. Speakers like Ben Shapiro get called alt-right when their views are not racist or misogynistic. Before long people view many right wing views as hate speech. The more they do that the more people react by saying actually hateful things as a backlash. And so the divide grows.
After watching and participating in this for years, I don't think this is true anymore.
The people who found it funny to piss off people by pretending to be Nazis ended up attracting actual Nazis and were eventually replaced by them.
It's much less funny to pretend to be a white supremacist when you know half the country actually agrees with you.
Half the country are white supremacists? I think you should walk outside and interact with some actual human beings.
Either half the population are white supremacists or they’re simply too stupid to not vote for white supremacists, which isn’t any better than actually being one. It’s not like all the people who supported Hitler literally wanted to kill millions of jews, still they supported it.