Yeah after two years even my parents and brother are on signal plus most of my close friends, the rest I just use regular sms
Most of the world doesn’t use SMS, they use WhatsApp. Plus, SMS is even worse than WhatsApp for privacy and security. And stopping using WhatsApp in most of the world is like not using email, so no “I don’t have WhatsApp, you can only contact me through signal” is possible.
I don’t just mean socially speaking. But for contacting services and stuff. My car insurance company only accepts reports through Whatsapp or through calling a guy to come look at your face for a fee.