it would! there’s a bunch of derivatives already, but most seem customised for specific commercial use, and there’s one for running on Pi boards
https://en.wikipedia.org/wiki/OpenHarmony#Software_distributions

runs on a POSIX multi-kernel with a BSD license that has been supporting android apps previously to help with a transition but now is being dropped, so android apps would need to be rebuilt

a LineageOS/GrapheneOS type situation that wouldn’t be as limited by a lack of google services would be great