To begin with: we’re a tech community. Building a better twitter is possible, so build it. Even if you don’t build a winning app, you could demonstrate ideas or designs for alternatives. It could even be mock ups or prototypes. Contribute ideas to making a better world.
One approach is to leave twitter to the addicts manipulated into rage and just waiting. Either people will “develop antibodies” to twitter (PG) or it will destroy itself.
As others have pointed out, the real world institutions can solve the problem by breaking the connection between ML-induced outrage and their policy decisions. You shouldn’t feel like you have to take that on yourself, but I guess if you liked that idea then you could campaign for it.
If you stay on twitter you might improve the average level of discourse, but don’t overestimate your ability to resist the feedback loop that will constantly be trying to find new ways to trick you into engagement (and most of the time, enragement). You’re only human and it’s relentless. It doesn’t seem very sophisticated but even a random search algorithm will work given enough tries. You’ll also be legitimising twitter, which is questionable because they are knowingly creating this problem (disclaimer: I’m on twitter).
Regulation of social networks is on the way, twitter probably peaked with Trump, and I think you also have to think about opportunity cost, eg arguing on twitter vs building something that improves the world.