Even if the Hurd didn't depend on Linux code (and as far as I know, it does, but since I think they have their design heads firmly up their asses anyway with that whole microkernel thing, I've never felt it was worth my time even looking at their code), I don't believe a religiously motivated development community can ever generate as good code except by pure chance.
LKML, September 27, 2006
https://groups.google.com/forum/#!msg/fa.linux.ker...[groups.google.com]