Earlier quoted context omitted.
It wouldn't violate the First Amendment, since the court isn't going to be a government actor for that purpose. A court absolutely could order someone to change their code to comport with the judgement--I mean, this happened to Apple in the not-too-distant past. What the court can't do is compel everybody to use the new hard fork, first for the simple reason that most of those people aren't being sued , but somewhat…
Miners investing hundred millions dollars into operation. If court will tell them, like for example 3 biggest miners from US to make that block, they will do it to protect investment, because other way they will get sanctions from gov. Other people on non-mining nodes can fork it, but noone with millions dollars at stake will be on forked chain and only miners make blocks. Court will not be stupid and believe, that s…
Wright wants a version of Bitcoin created with a backdoor to transaction authentication that lets him take coins without presenting the required credentials. If he created such a version and convinced some miners to run it, they'd simply stop producing blocks (at least from the perspective of anyone who didn't also adopt his backdoor).
So the situation you imagine would just result in hashrate going down-- which can be a bit of an an annoyance since it slows down transaction settlement temporarily, but isn't a dire issue (e.g. Bitcoin lost on the order of half its hash power for a while after china issued a ban).
In any case, if Wright shared your theory and was acting in good faith the target of his actions would be miners and not volunteer open source developers. He's stated outright in public that he expects the ruinous cost of his litigation to destroy the lives of his targets.