To be fair, the random guy in Nebraska is often part of the Rust core team. Like, it's distributed as a separate library, allowing the library to make changes independently from the stdlib and to be replaced, if a better library emerges, but that doesn't mean it's necessarily of worse quality.

Having said that, yes, for some things you can't find a library by someone from the Rust team and especially for newbies, it's difficult to know which libraries are good and which not.