Yeah, to be fair, the current state of encryption has been one of the major grievances with RCS.
The fact that Apple is pushing for a more universal E2E standard, and having Google onboard for it, is a good thing for everyone.
Also, those unencrypted messages will be called on their clients. Messages on Android gets the no lock icon, and Messages in Apple’s ecosystem gets green bubbles.
This Sunbird thing is some bullshit because people think it’s encrypted, and it isn’t. Unencrypted comms are getting blue bubbled.