Reading that again today in the context of "Linux gives up on 6-year LTS kernels, says they’re too much work", Android could have been a prime helper of LTS kernel maintenance.
Oh! so I guess the plan didn't exactly work out as expected :/
So I guess if something as sizeable and impactful as Android can't reliably move the needle towards 7 to 10 years of maintained stability then the only way forward is a few select ones providing forked stability and the remainder has to continually upgrade to keep being maintained.
https://www.reddit.com/r/linux/comments/jiky5j/linux_510_is_...