There is other non-Apple software that has been happily using "mac" in its name for a long time, no?

Everybody knows MacPorts, and there's Mactracker and MacCleanse on the App Store itself, and the infamous Mackeeper (which may very well be malware; Apple should go after them first) and companies: MacPhun and MacPaw.

But I guess people may confuse "Mac CLI" as being an official part of macOS.