> it cannot even host its own tools

You say this like this is the basic requirement for a language. But languages make tradeoffs that make them more appropriate for some domains and not others. There's no shade if a language isn't ideal for developer tools, just like there's no shade if a language isn't perfect for web frontends, web backends, embedded development, safety critical code (think pacemakers), mobile development, neural networks and on and on.

Seriously, go to https://astral.sh and scroll down to "Linting the CPython code base from scratch". It would be easy to look at that and conclude that Python's best days are behind it because it's so slow. In reality Python is an even better language at its core domains now that its developer tools have been rewritten in Rust. It's the same excellent language, but now developers can iterate faster.

It's the same with JavaScript. Just because it's not the best language for linters and formatters doesn't mean it's broken.