Eh, I'm just assuming OP holds views that a lot of people here disagree here with (thus end up getting downvoted), and writes it off as "not allowed to say it" here. That's usually the gist of why people complain about freedom of speech nowadays, regardless of their ideology. Yes, I understand there are billions of exceptions, and I understand how users get banned for "wrong think". But that happens literally everywhere, and all you have to do is to be loud enough to piss of the right people.

Everyone wants to be liked, and search for the venues where they can express their views where they would be a part of majority. Basically the reason why people skew towards echo-chambers, in real and digital life.