Everyone I tried explaining to that it's GNU/Linux has rolled their eyes at me like I'm some kind of pedantic madman. Then I gave up doing it and went back just calling it Linux.
Potato, tomato. No one cares outside of the RMS cult.
Indeed. Ten years ago everyone made fun of Stallman for his insistence on calling it GNU/Linux (I was guilty of this as well). These days, with android so popular, it's very topical - I want GNU/Linux on my devices, not just linux.
"Linus Torvalds, the principal force behind development of the Linux kernel and overseer of open source development for the Linux operating system"