I think there's a fair amount of variability in experiences. I switched to AMD after getting fed up with multiple Nvidia cards having odd issues (though I'd use Nvidia if I were doing ML work). Mac hardware as a general rule has always been at least decent (if not good or better), but Mac software has generally been going downhill, so if for whatever reason Mac OSX/MacOS was not appropriate, it's easier to set up what you need on a non-Apple machine (of sufficient quality) than install a different OS on the Mac.