Being able to ignore parallel rendering, RSC, hooks, etc, and just write simple code for simple sites again would be fantastic.
Unfortunately all the major competition I've seen seems so significantly different that migrating any kind of non-trivial application would basically be a full rewrite. Is Preact or similar offering much promise here?
TypeScript exists for the same reason things like mypy exists, and no one in their right mind claims that python's openness should be threatened just because static typing is convenient.
I suppose JS could go in the same direction and adopt the typing syntax from TS as a non-runtime thing. Then the typescript compiler would become something like mypy, an entirely optional part of the ecosystem.