Two things happening.
Signal never supported the type of RCS that google messages and iMessage use.
You might have an easier time evangelizing signal if it also did SMS. But I believe them if they said the mixed messaging was more damaging to the UX than the slight advantage it granted.
Especially since it can’t do RCS, since google is a monopolist.
Steve@communick.news 17 hours ago
No we were talking about Signal.
That’s what the comment you responded to mentioned.