no gnu

"Not sure what you're arguing for or against."

I am arguing for the importance of GNU, and that it is OK to call it the GNU system, when I want to point to the freedom aspect of the system.

"I've never met a Linux dev that thinks "only the kernel is important." Have you?"

I have heard that Linux is the most important part, that calling it the GNU/Linux system is taking credit wrongly, that free software is the old name for open source, they provided the compiler and the toolchain (thats it)...

I think that the biggest contribution from the GNU side is the definition of free software, the licenses, the persistent marketing. They also made some software.