@antoniovr @signalapp @silence I found the reasoning post for removing plaintext sms from @signalapp here
https://signal.org/blog/sms-removal-android/
And it looks like it comes down to, not wanting to deal with the insecure nature of sms messaging even though it was clearly labeled in the android app, Google store compliance, and what I read as wanting to make some kind of unity between the iOS version and the android version.
And their solution for ending sms support was, go somewhere else we don't want you