Comment by SiliconSplash

The biggest problem with the term "Free Speech" is that almost everyone makes exceptions for things that they believe should be restricted/censored.

Therefore the only standard should be the legality of that speech in a particular country. In the US those things you put as exemptions are permitted. So pre-musk Twitter wasn't about free-speech as those exemptions are restrictions on speech that are greater than US law restricts (which isn't much tbh).

Generally you have a trade off on any of these platforms between what you can say without breaking terms of service and the popularity of that platform. Generally less popular platforms are less restrictive.

If you don't want your speech restricted, you should probably just go back to hosting your blog and using a mailing list.