I don't think Stallman would be proud of anything Android, and certainly not something that the user can't update outside of the manufacturer updates. Pretty much everything has a locked down BIOS, and you can't really modify the OS yourself.
I'm using a Pixel (bad) with GrapheneOS (good), so I think Stallman would be a little happier, but he'd probably still prefer something like a Pinephone, which I think has a project to open up the modem.