I have to ask: so what? Most of the stuff here is rather specific to the test suite conflicting with security or features and does not adversely users or develo

I have to ask: so what? Most of the stuff here is rather specific to the test suite conflicting with security or features and does not adversely users or developers who care about UNIX behavior (SIP is really the only thing that may get in the way, but anyone who cares can disable it). For example, the fact that spotlight might update file access times is presumably not itself a violation of the UNIX standard, it's just something the test suite isn't expecting. The weirdest thing here is the uucp stuff, but that's an obsolete and rather dead technology so I see no reason to complain about macOS not giving those binaries the setuid bit, especially when the workaround so trivial.