This is simply tu quoque - clearly there are limits to free speech in every country but where possible the right to free expression should outweigh the the state’s desire to silence political opposition.

Twitter was a pretty good example of this actually - protecting people’s right to hear from the President (despite him saying and doing many things that would have got regular users banned) right up until the point where he led an insurrection on the Capitol. I don’t think you can argue anything other than Twitter taking their responsibility to free speech incredibly seriously - to the point where they were often accused of being complicit to juice user metrics. And perhaps do some research into Joel Kaplan before you claim the same of Facebook.

Clearly this is not in the same realm as Holocaust denial (which is incidentally also legal in roughly half of the EU countries).