We got here by making it so easy to use 3rd party libraries and also making it easy to create and publish them regardless of quality. I do not think it is a bad thing. But if it's easy and fast people will do it more often and we end up with projects with ton of dependencies that are ever evolving.

I also think "not invented here syndrome" is not (always) bad. A piece of your own codebase instead of a 3rd party library can have less maintenance cost even if it's a often reused piece of functionality. I always deliberate on adding just another library even if it's just one npm install away.