In what way does having to compile a Rust library prevent this?

IME, and I may be off base, the new generation of Rust/Go binaries have a more "batteries-included" philosophy, i.e. developers don't assume that they can piggyback off existing user system libraries, which generally makes it a nicer install UX.

It will fail to compile as well if they depend on any system library or OS specific feature not present on your system.