When I read these things I always have to think of Voat, the reddit clone that was 'open to assholes'. A lot of reddit users who could not follow the rules actually jumped ship, but what they found was that Voat was not really what they were looking for. They (ironically) did not find their safespace there because the other side of the coin was that other users could also criticize their views (extremism is exponential). That was not what they were looking for.

The other reason it didn't really work out well is that people need an audience. Voat was and is much smaller than reddit, so they had less reach. What I'm trying to say is, is that it's not a technical challenge, those have been solved already. It's people with extreme views who want to be able to express themselves where those views are not tolerated.

I'll join the protests once they actually start censoring, but if it's just like hey: don't be an asshole or you can just be an asshole somewhere else... I'm fine with it.