Occasionally it occurs, but the real purpose of the 'box is a hate sink. Suck up all the yelling and hate and put it in a somewhat hidden place, so that the real board can function as intended.

And indeed, the discussion about who can kick whom off of social media is probably going to come to a head in the next few years. Parler makes some great points in its lawsuit against Amazon, one of which is "hey, if 'inciting violence' is how you get kicked off, then why didn't you boot Twitter when 'Hang Mike Pence' was trending?" Big Tech is increasingly monopolizing the most precious commodity of all - our speech - and either the country will decide it is OK with that, or not. They are either a publisher or a platform, and will need to eventually stop arguing out of both sides of their mouth on that. Increasingly the left is happy to turn them into a publisher and Big Tech is generally happy to agree - which could backfire spectacularly if the right trial lawyer and the right judge decide their billions of dollars in value are the perfect target (for example) for a lawsuit on behalf of a bullied suicide victim.