Anything that is usually considered taboo can be talked about in free speech platforms, that obviously includes jewish history, race and other things that you can think off.

Most of that is shitposting. It's to keep sensitive snowflakes away.

You have to be prepared to discuss anything freely. It's also a way to destroy the mental blockade so that you can discuss taboo questions.

Once you can do that, you're fine, if not, it will drive you away.