@jon having rules against hate speech is not and has never been anti-free speech, they're in fact vital for actual free speech to flourish. But whatever the hell Musk is doing on his propaganda site definitely is against free speech, because he's currently explicitly doing the thing he claimed past leadership of the site was doing to him and his kind; boosting himself and his friends while deliberately ranking others lower to limit the reach of something he doesn't want other to see.
Technically one could sort of also argue that it's not against free speech because first of all it's a private company that can do pretty much whatever it wants (to an extent I suppose), and secondly because the messages aren't usually specifically deleted. But I do see it as being highly suspicious to say the least.
In any case, the only proper course of action is to dump Twitter, since it's literally the nazi bar now. It's also good to be suspicious of Meta because it has a history of being quite horrible. And also be wary of Bluesky, since something is very much off in that one and it won't be good in a few years, mark my words.