I think I'm reading this blogpost correctly: Mobian devs working on maintaining Linux kernel support for Pinephone painted themselves into a corner with tech debt, and may not be able to continue porting new kernel updates. Pinephone Pro runs a different chipset with wider community support, so it's not affected.
I didn't see any communities or articles talking about this, so either it's not a big deal, or nobody is talking about it.
The pinephone is cool but so underpowered. Hoping to get some use out of of it as a audio looper controller. Looks like I can anticipate a sharp drop in support in the next year or two.