so the thing is, as an Android dev if I get embedded linux experience then I have lateral career movement to the peripherals that I'm usually writing apps for. While the intersection of app developers to embedded linux developers is probably very small, there is a smidge of incentive there, and that can be a powerful thing for the community: a lot of the pain points on linux phones feel hardware oriented (I complain loudly about the pinephone battery elsewhere in this thread).

another tailwind might be in the gaming scene. I have the general sense that SteamOS has been an interesting gateway for technically-minded folks to be impressed by this Linux thing. A similar model for mobile phones might be a tailwind (like a SteamOS for ARM?) The reason why that's perfect is because it undermines the Google monopoly and creates an app ecosystem that people will absolutely flock to, at least for games ($$).