Oh, definitely. But the Linux (or alternate OS) fans are not really on Apple's radar. OTOH, they do a good job of keeping some core binaries up-to-date, like zsh and Vim, and they did appeal about getting good compile times during the M1 release event, so they consider POSIX users part of their target market.

Last I checked, I can compile and deploy an iOS app without the need for anything POSIX.