JS culture is to pull a dependency for anything, in Zig land I assume it is more conservative like C or C++: pull one or two for your specific bigger picture or often enough none at all, because people pride themselves with projects having the minimal amount of dependencies. Otherwise there is truth to what you are saying.

The thing about the tooling is often that most users do not have the ability to contribute even if it is in a language they are proficient in.

Oh and until there is a good enough AOT compiler for JS there will always be a lot of tooling that is not in JS.