In Norway WhatsUp is popular, but my dentist still use SMS and email, and so other businesses that I interact with. My son’s school has own app for communicating with parents and teachers use Teams to present online lectures. My son uses Discord to talk to friends, but I think he is an exception.

What is really problematic is Facebook monopoly for organizing any social activities or events. There are simply no alternatives especially among 30-50 years old. Like the saying, “What parents were afraid video game would do to children, Facebook did to parents.”