> In JS you need a handful of third party packages just to tell if a number is odd

Maybe it's hyperbole, but you definitely don't "need" any third-party package to tell if a number is odd (`i % 2` does the trick). That there exists a package for it doesn't mean that the majority of users actually use it.

The standard library for JS is pretty small in general, but I don't think hyperbole is the right way of getting your point across, as I agree with you in general.