It’s just legal conformance. macOS X+ has always been UNIX compliant but they were sued for claiming that without having official certification https://www.cne

It’s just legal conformance. macOS X+ has always been UNIX compliant but they were sued for claiming that without having official certification https://www.cnet.com/tech/services-and-software/apple-in-court-dispute-over-unix/ https://www.cnet.com/tech/services-and-software/apple-in-cou... It means nothing in reality