One example of where the manpower just isn’t there for both Linux desktop and the PinePhone is a solid maps app. All solutions are little more than tech demos compared to OSMAnd on Android. Yes, OSMAnd itself has grown through contributions from the community, but it basically soaked up already what little manpower there is. There are other examples where running Android apps on the PinePhone under a compatibility layer is seen as a necessity to get around the PinePhone's lack of manpower.
For an overview of the current PinePhone app landscape I suggest a look at https://LINMOBapps.frama.io – contributions welcome!
[0] I recently brought back old posts to my blog https://linmob.net that I wrote 1.2 years after the G1’s initial US release.
After IBM intervention and their contribution to GNOME 40 - I'm not sure about suffering anymore.
So yeah, we need more players on mobile Linux field.
Everyone I know working on something PinePhone-related is concerned about the small size of the dev community.
(I'm not sure I agree, I just think that's the argument)
And things like Wayland and Mir and some desktops reinventing their own wheels all the time are/were seriously putting that into jeopardy.