This is a long rant that gets rambling in parts. The reference to XFree86 before it got renamed to XOrg some time ago has me wondering if you copy-pasted from some 90s thing.

But GCC and related stuff like binutils are not the only important code contributions from GNU. Glibc and bash are two that immediately come to mind. Certainly there are others.

(Though before the late 1990s Linux had its own non gnu libc..)