@FailurePersonified >So when someone runs Linux
That's like saying someone is runs a transmission.

If you say that you are running GNU, it means that a bunch of fine GNU software is installed, like glibc, Linux-libre, or GNU Hurd, the best coreutils, the Emacs OS, GNU binutils, GNU screen, GNU less, GNU tar, GNU gzip, GNU nano, GNU readline and so on and so on are installed - most binaries use glibc and other GNU libraries to be available and don't care about what kernel is in use.

All nontrivial free OS's use GNU's tooling, but tooling is only one part of it; https://www.gnu.org/software/