Everyone is free to make their own decisions. It's an infinitely large pool of people making decisions. If anyone disagrees with what Linus includes in his "official" kernel, they just make their own.
Originally Posted by WorBlux
In fact, the vast majority of kernels that people use don't come from Linus at all. They come from Red Hat, Ubuntu, etc., and they all maintain their own custom patchsets that they've built on top of the one Linus ships.
Burdening Linus with more bureaucratic work seems like a mistake to me.