> (...) but languages with a better standard library seem less affected by dependency hell.

Let's ignore the hand-waving over what "better standard library" means.

Dependency hell has zero to do with standard libraries, and is exclusively related to modularity. If your language supports third party modules that can depend on third party modules, you have dependency management. Managing dependencies so far is hell, no matter how you go about it.

Of course it's related. The more the standard library provides for you, the less you need to rely on third party dependencies.