No, GNU isn't just GNU coreutils. Its also not coreutils+gcc+BASH+(things made by the GNU project).

GNU is the name of the stack of the OS we mainly use at PCs and servers. It is synonym for GNU/Linux.

I really don't understand what is the point of losers trying to undermine GNU/Linux, or GNU part of it. If not for FSF and the fight for libre software, we wouldn't have the Linux kernel, or at least a practical use for it. Other variants of kernels, systems, licenses, such as BSD, OSX and the MIT permissive license, wouldn't have resisted the pressure of proprietary/locked-down software and licenses. GPL and GNU was victorious and conquered space for all of these variants as well.

We owe much to the GNU project and the GNU/Linux operating system. Being a jerk to others, on the other hand, won't get us anywhere.