GNU is a recursive acronym for “GNU’s Not Unix!”,[6][12] chosen because GNU’s design is Unix-like, but differs from Unix by being free software and containing no Unix code.[6][13][14] Stallman chose the name by using various plays on words, including the song The Gnu.[4]: 45:30
Isn’t that like claiming all Linux, Android and MacOS are just UNIX?
https://en.wikipedia.org/wiki/GNU