Sometimes I think about evangelizing the Fedi to local government officials since I am sure a lot of them are disgusted with Musk. (I live in one of the most liberal counties)
Blocking might be a problem to second order. Say there is some climate denier who is just always saying that reports of 115F at the airport in Phoenix are false. Can the weather service block that person, even if means they can’t get weather alerts anymore?
It only make sense that large enough entities run their own instance, they don't even have to self host it.
I always found it strange that no serious professional would use an @gmail.com email but somehow publishing behind twitter.com was normal. At least now there is a viable alternative...