Sorry if I misrepresented things.
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.
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.