Re: As a non-apple owner...
macOS is NOT in any way, shape, or form, a Linux derivative. OS X was originally built on NeXTSTEP, which was based on the Mach kernel, plus BSD. https://en.wikipedia.org/wiki/NeXTSTEP
For some reason, a lot of tuxers seem to think that macOS/OS X is just another Linux distro, except that Apple used to cheat and charge for it. Given how easy it is to find the facts, I can only think that this kind of thing is sheer willful ignorance.