Because that shows that they don't understand what the whole *point* of the kernel was after all. We're not masturbating around with some research project. We never were. Even when Linux was young, the whole and only point was to make a *usable* system. It's why it's not some crazy drug-induced microkernel or other random crazy thing.
Damn straight. I think OSS projects need a bit more of that, with all the rewriting and such going on and everything breaking all the time.