I couldn't care less about this.
That's not true at all. I assume that besides Signal you use WhatsApp, though?
And yes, WhatsApp is prevalent here.
I merely describe the current status in Germany.
I can't understand who and why anyone cares about SMS these day, besides receiving government emergency notifications.
Regardless of that, you can still always receive SMS for the 3 outdated services that still use it.
(As my friend used to ironically say: "Is your grandma so senile that she can't type `configure; make; make install`?")
I don't even open the SMS program if I get a code. I type it from the notification area. I certainly don't have to answer to it.
I couldn't care less about this.