And without GNU tools, Linux by itself is also useless without GNU tools (unless you can compile C by hand). GNU/Linux is the OS. Ubuntu, Fedora, etc. are distributions of this OS.
Hmm. Does anyone know if someone has tried to make a Linux dist based on the similar tools the BSD world have?
I realize they probably would have to be modified quite heavily considering the architechture of BSD, but I've seen stranger things done in computing :)
A world of Android-devices disagree with your definition of "useless". And so does my router and NAS (which both comes with Busybox, not GNU tools).