Facebook, Twitter, YouTube et al. should go on outright banfests. There is no free speech argument to be made. None. Zero. These aren't government enterprises and getting banned from these sites for any reason really shouldn't matter. Facebook already enforces some weird moral code where a nipple gets you instantly banned, but when it comes to politics somehow it's a "free speech" argument and they don't want to take sides. It's 100% bullshit.
These companies need to grow up. If people don't like that they have been banned then they can start an alternative site or, you know, use the decentralized Internet the way it was designed. If we were talking about ICANN policing domains that would be a legitimate "slippery slope", but we aren't.
The only thing they really stand to lose by banning blatant conspiracy theory whack jobs and divisive hate speech is some ad revenue associated with that stuff, most of which is predatory anyway. Nipples? Not acceptable, banned. Fair use of media owned by a large company? Copyright strike, banned. Divisive conspiracy theories that promote hate? Free Speech! Selling literally snake oil? Free speech!
Americans LOVE to pretend like they are morally superior, but the moral code and values built into todays companies are completely bonkers. Free speech is constantly invoked when it doesn't even apply, and it's applied so inconsistently it doesn't even make sense.
Mark Zuckerberg should travel to Nidavellir and have the Dwarf King Eitri forge him a ban hammer the likes of which the Facebook has never seen.