Hate remained perfectly acceptable, perhaps outright encouraged, for certain groups of targets. Disinformation was perfectly fine if it was propaganda/spin for the correct tribe.
If this black/white lens continues to drive the discussion, the most neutral person will be seen as the enemy by both sides.
Sorry for the DV's
Not sure if that's what we're talking about here. For the record I am against that practice.
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.
Pre-Musk Twitter was more about free speech, except it was trying to fight bots, hate speech and disinformation.