There are not many reasons not to use my kernel tree for Pinephone. I actually had reports from users that my multi-distro image that uses my kernel for 13 different pinephone distributions makes some distros run better.
I suspect that distro maintainers just think that pine64 community gitlab is somehow more official than any other pinephone kernel developer's tree on the internet, just from the name.
After giving Purism some money for their "Fund Your App"-thingy today I decided to hit your donation button with a small, but recurring donation, because you deserve it for all your work – even if, sadly, my favourite distribution (DanctNIX Mobile) does not use your kernel and I am too lazy to change that on my end.