I read it very differently. To me it sounds like the base assumption was that the majority of ideas are worthwhile and not nefarious or damaging, and that he now feels that was wrong.

Anyone who has been a moderator on a public forum, let alone one as big as twitter, can quickly tell you that not all ideas are created equal.

I have said it before on this board of which is moderated, but if every single person spoke their mind the internet would be full of absolute garbage and hate, because those people tend to speak loudest and most often when given the chance.

To be clear I am not for censorship and I want to make sure there is a place for everyones legitimate views. But there is no sense in pretending free speech has to be a free for all. We can dismiss some things as objectively bad. Even a presidential debate has a moderator and there is an expected legitimacy to the discourse.