There is another issue here which is the external pressures platforms face.

Platforms will always be judged by journalists based on their lowest common denominator of users. Journalists will purposefully turn off all filters, find the worst comments, and say X platform is all like that bad person

This behaviour is then happily used by politicians to push platform owners in certain directions, possibly with the threat of regulation.

It also might mean coordinated leaving of advertisers, killing the platform.

So while in theory this article is right, there’s external power games that really play into the free speech issue.