I have been playing with Anbox both on my desktop and on the Pinephone(Mobian) it is sort of nice to be able to get some androd stuff running but it is really unstable and input is tricky, the gestures dont even really work right(think swipe down for refresh) even if I can get an app running.
Native is the way to go but unless flatpak is the answer getting a nice unified community contrib repo like Maemo will take a while; especially with all of the pinephone OS options doing their own thing.
I respect Mobian for their discipline but it is still moving slow when I already want my ultimate N900 replacement.
FOr now my experience is that I have better than an OpenMoko GTA2(though they are still working on a standardized non-hack GPS) but also not a N900 yet, even if I can still also say that for LineageOS phones. Maemo and the available apps that are still functional are still the most satisfying in UI style and function.