iOS developer here and I would switch in a heartbeat but unfortunately it’s not about the OS, it’s about the software that runs on the OS.

Most devs wont build for an OS that doesn’t have an audience. And users will put up with a lot of OS junk for their apps.

So it’s gonna be up to someone to make a linux phone and use their wallet to kickstart a software ecosystem. One won’t happen without the other, at least not at the scale of Google or Apple.