Eh. People have written replacements for glibc because they didn't like something or another about it, and that seems to me to be way more fraught with risk than coreutils.
Folks also run into compatibility issues with musl as well. The biggest I recall was an issue with DNS breaking because musl didn’t implement some piece.
Fair enough. My gut sense is that C functions are simpler than shell commands, with a handful of parameters rather than a dozen or more flags, and this bug supports that -- they forgot to implement a flag in "date." But I haven't tried to do either, so I could be wrong.
