I do. Maybe not the tools that become popular, but new developers often consider publishing their first side project or personal tool to be a valuable milestone

I do. Maybe not the tools that become popular, but new developers often consider publishing their first side project or personal tool to be a valuable milestone. I think a lot of green developers' JS tools don't make it to the mainstream, but they certainly do make it more difficult to filter hype from substance. That's not a valid reason to discourage contributions: more people hacking on more stuff and making more discoveries, even at the cost of fragmentation, is far more valuable than putting a chilling effect on contributions (and there are other ways to mitigate fragmentation).