> It doesn't (need to) get packaged by a distribution until a program using it is packaged.

I think this is a key difference in approach. In languages with their own packaging systems, you routinely package libraries before there are programs using them. Publishing them on Crates/PyPI/npm/whatever is the bare minimum if you expect anyone to use them!

The number of tiny dependencies can go too far - I don't think I need to mention left-pad. But the difficulty of using dependencies in C/C++, and the results of reinventing stuff, vendoring, or using kitchen-sink dependencies like Qt, don't seem optimal either. There must be a happy medium somewhere.