Perhaps, or perhaps enough developers adopt a given project that it becomes a viable platform. I'm thinking of DropWizard, which is mostly an opinionated collection of libraries and which has a large impact. (Or at least it did... been a while since I've done Java.)

One problem I often find myself facing w/Python is that the ecosystem is so large that it's hard to keep up with the vast numbers of libraries. I have a list of a dozen or so in my head that for a large enough project I'd probably want to use. But personally keeping that list fresh is non-trivial. That, and of course, newer devs in an ecosystem don't have one.

I think these sorts of projects speak to that need.

Now, obviously as you suggest, people have differing needs/preferences, so there's room for competing visions, and in some cases this can become a sort of "now we have N+1 problems" meta-problem. But I don't think the fundamental impetus is misguided.