Earlier quoted context omitted.
I will never understand why private companies curating their platforms is equated with censorship. In China (and elsewhere) a central government curates acceptable speech. If you don't comply you go to jail. In the "West" you might get kicked off a platform, which diminishes your reach, but doesn't extinguish your speech. You can always find another soapbox. Or start your own, as one recent ex-president demonstrated.
Because it's censorship. Getting banned off Twitter, and getting executed by firing squad, are both forms of censorship.
If twitter and the government work together (e.g. twitter banning people that disagree with the government to get favors or avoid punishments) then that should be treated in a similar lense as government action.