I'm not a big fan of it, but that's quite an exaggeration. If it were "completely unusable", then people wouldn't be using it, and it wouldn't have been an issue. The fact that the situation isn't what we want it to be, but nevertheless is still tenable makes it a much harder problem to deal with.
Alright. I confess, it has parts that functionally work. You can press buttons and enter text and most of the time they respond.
I literally cannot access the “content”, usually a single sentence, without signing in.
I’m frustrated because it is being used by politics and government as well as some sort of universal comms and it’s very, very far from that.
It's really why enshittification can be a thing. Network effect-ed services can do random walks in quality or degrade significantly while still keeping staying power.
Enshittification, as described by C Doctorow and others is just one potential, but likely path for a popular service to take.