[wtallis]

It doesn't look like the certification requires those UUCP binaries to be in /usr/local, that's just where you have to put them on macOS to be able to `chmod +s` them, which is what the certification actually requires. Less arbitrary, but even more clearly obsolete and bad practice for a modern OS.

[duskwuff]

Oh, that makes more sense. I'm still not sure why you couldn't give the binaries setuid in their default locations, given that compliance testing also requires SIP to be disabled - but, in any case, at least they aren't setuid by default.

Anyways, "real UNIX systems must implement UUCP" is still extremely silly.