Comment by mort96

All those "forks" are dependent on regularly rebasing their patch sets on top of mainline (or they never get updated and lose what semblance of support they had once the SoC they were made for reaches EoL), so they're pretty much irrelevant to this conversation. We have seen no indication that it's feasible for anyone to hard-fork the kernel and continue development in a way that's independent from what we today call "mainline".