It does, but it's not without its downsides either. stdlib modules might end up being abandoned or deprecated because the design can't be changed and it doesn't

It does, but it's not without its downsides either. stdlib modules might end up being abandoned or deprecated because the design can't be changed and it doesn't work well anymore or there are unfixable security issues. Python's stdlib has plenty of such modules for example. Considering that the Rust dev team is mostly volunteers, and many of the most important non-std-lib libraries in the Rust ecosystem are maintained by those same people I feel like there's less of a distinction than there is made out to be.