Why not? It works fine on pine devices.

Every long term review of Pine devices I've read ends with ".... so I ended up going back to my previous platform"

I guess I’m not clear what the point would be. I suppose you could build a phone that uses more of the gnu ecosystem than Android does, but you’re not going to run desktop apps on your phone because none of them are made for the phone. It would be a bad experience. So it becomes (Desktop) Linux for (Desktop) Linux’s sake.