Tridge (another kernel dev) reversed BK protocol and repo structure, as trivial as they were. BK people got understandably upset about this, in part because they were providing BK to the Linux Kernel Project for free. So Tridge's little stunt basically killed any and all goodwill between BK and LKP and Linus needed a replacement. All alternatives had issues and everyone just kept going in circles, bitching and moaning. So in a true programmers way Linus sat down and wrote what he wanted. The end.