> Lineage is updated weekly for many devices

You see, right there you described why most people, myself included, aren't interested in that. I can't be bothered to care about weekly OS updates, I tolerate the 1-2 yearly updates to my android because as someone in the security industry I understand the need for updates but that's it. A phone isn't something I care about tinkering with, it's a tool and I want it to work well with as minimal maintenance getting in the way as possible. I couldn't even be bothered to root my current phone, much less install a different OS.