Proprietary blobs are also present throughout regular linux distributions. And I hear and participate with the moans they generate but users understand that sometimes modems, wireless chips or GPUs (main culprits) have us stuck at the onset of using Linux at all. Debian had to reverse it’s procedure from a default free only to default mix and user has to specify if he doesn’t want proprietary firmware installed. Even graphene OS has to make do with proprietary firmware.

Jolla has sailfish OS as the official ROM and it has for quite a few years now (for all their past phones). It’s not marketed as a dev experimental.