> a significant portion of the language's developers are only capable of developing by stacking 1000 packages on top of each other, with no ability to write their own code

That's because those devs are incompetent, not because there are a ton of packages.

I believe one enables the other. If the package ecosystem wasn't oversaturated to the degree it is, they wouldn't be able to masquerade as developers and publish anything. But because there is a Javascript component for everything, they can do enough of an impression of a developer to ship things and get hired without ever learning how to actually program.