I haven't met a single person using SMS for so long that I can't even remember the phone I had last time I used it. I do work with a lot different contractors.

And yes, WhatsApp is prevalent here.

You're saying this as if it were preferable to give all your contacts and metadata to WhatsApp/Facebook.

Where am I supposed to have done that? It's not even the topic here.

I merely describe the current status in Germany.