If you have not read Isaacson's Elon Musk you should. He documents the heavy hand of X free speech controls many times. You have to read or audible the whole book.

What my company is doing with truthcourt.net is providing a private way in which people can dissect the truth for themselves as a tool for use in any social media, or in fact learned media as well. You need such a third party tool. Here it is truthcourt.net. (And there can only be one of these that works well by the science).

The Internet Court of Truth and Lies.

You are right about what X should be. But it isn't because they have and use many ways to not be an open forum for opinions.