"Free Speech" by whom? Musk owns the platform, he can do whatever he wants with it. Twitter is and always was an advertising / entertainment platform that had a weird side effect of distributing information. It's a shame that he done broke it.

But "free speech" is "the government puts you in jail/kills/takes your stuff for saying or not saying something."

Twitter, FaceBook, ToothSocial, breightbargh, NYT, FoxNews -- all have an editorial voice, exist to advertise and entertain, and are not really under any obligation to promote or not promote any specific agenda.

There's some gray area where the US "Common Carrier" doctrine (where a conveyance isn't liable for what people use it for, if they impose no editorial control over the content, such as the situation of someone defrauding someone else using a telegram protects the telegram operator from liability). The best case would probably just be to say that "algorithmic" moderating is editorial control so the facebook and traughsocial and twitter all would be liable for content, and thus not viable enterprises. Good Riddance.