I think it's lame how bad the documentation around it is 40 years in, which I can kind of forgive because of how well thought out and complete pretty much everything is, once you figure it out.

That is not to say that there aren't very sensible JS options – for example AdonisJS is well long running, constructed and feature complete TS backend framework, that has little traction – only that the community seems to value excitement and Apple marketing site aesthetics to the point, where even core concepts in their darlings are so absurdly unstable, that it seems entirely irresponsible to built any reasonably sized project on it.