I gotta keep asking the obvious question: Why won't someone else build a Twitter?
Not a "free speech" Twitter, not a "better" Twitter, just... figuratively rebranded Twitter. Same concept, maybe different implementation details, some modest innovations, but give the people who want to leave a place to go.
The only answer I've ever gotten (that isn't solvable by being good at software engineering) is, "network effects!" but... now is the moment, if ever there was a moment, where the network is most fragile on Twitter.
Give people a place to go for a "Twitter Classic" experience, before the rudeness and hate get re-platformed!
Whoever does this, I feel confident in saying, will be a millionaire. I dunno if there are any more "Social Media" billionaires left, but millionaire? That feels very achievable!
The "network effect" isn't some little thing you can easily solve. Like saying "building rockets is easy, the designs are all there, just solve the gravity problem".