Do we really need this tag? Isn't the osx tag enough?
Expanding on Jordi Kroon's suggestion:
We need a good tag wiki. So that noone uses osx for hardware and mac for software.
We should blacklist the tag mac, and instead have a tag mac-hardware. and a mac-os for operating system.
Possibly where mac-os is synonymised to osx (or the latest mac OS), but as comments point out this has issues. Instead puttign a note in the osx tag wiki saying Strongly consider using the mac-os tag if this is not specifically for osx, but for any mac-os. Please do not use both.