My point is that, generally speaking, what pizza is asking for doesn’t practically increase the libraries available (I would expect that JavaScript already has

My point is that, generally speaking, what pizza is asking for doesn’t practically increase the libraries available (I would expect that JavaScript already has equivalents for the vast majority of the applicable pure Python libraries—and libraries that aren’t pure Python won’t work), and doesn’t solve as much as you’d hope in the way of wheel reinvention and writing less code (in fact, I’d categorise the entire effort as wheel reinvention and writing more code, though I acknowledge the library versus end user distinction in this regard). Your second paragraph reinforces my very point; pizza was saying it’s not so much about lowering a barrier of entry, yet that’s the majority of what you’re wanting it for.