This power could be used to sensor you in the future. This power could be put in the hands of a group of people who thinks completely different from you.
Honestly, where on earth have you people been? Tech companies have been "censoring" all sorts of people they deem undesirable for years, why is it the literal terrorist white supremacists that caused everyone to sit up and notice?
That power has always existed, and could have always been used "by those who think completely different" from us. If they think that differently, then they wouldn't even think twice about using said power to censor.
In this case, Twitter et al. thought a LOT about what to do, as they did very little for 4 year's of Trump's presidency, and only decided to act after Trump incited a literal self-coup and insurrection with the goal of illegitimately keeping himself in power.
If in the future "those who think completely differently from me" are going to think liberal ideas are so dangerous to be removed, it won't matter what "standard" we set today. It seems even with the highest standard of "don't support open coups", you still think I will be judged the exact same.
Censorship is bad. But insurrections against legitimate governments are worse.
I do agree 100% with you. That's why I do think we need to decrease the power of the state and also the power of the corporations using a modern antitrust law. If they power continues to grow, we'll live in a totalitarian state, dictate by politicians and corporations together.