"censorship is connected to regimes who killed (and continue to kill) way more people then all the terror attacks combined. "
Every state and institution in the world 'censors.
The BBC, ABC news, Fox News, the government, every corporation, Facebook, Twitter, Google.
Every single one.
Stop talking about this absolutist stuff - it's not helping the argument.
You, as an individual, can stand outside your home and say quite a lot of things before the cops will arrest you, but that doesn't mean there are not rules in the commons.
There are basic rules for civility in every institution, if you don't like them, start your own institution where you can press 'free speech' essentially to the legal maximum.
If someone tried to stop you from criticizing a politician, that would be an unnaceptable restriction but that's not happening.
If someone tried to stop you from telling your friends privately that you think COVID is fabricated by the Nazis, well, it' be bad because you have that right.
But don't have any inherent right to go on to some massive platform to tell Americans that you have evidence the COVID vaccine is killing people - if the owners of said platform don't want to let you on.