

I’m currently in a former USSR country on holiday and everything is WhatsApp and Telegram. Delivery drivers to government services.
Japan is still on floppy disks attached to carrier pigeons.
China is WhatsApp for every non Chinese even with the ban. Wechat for everything else but you need a Chinese mobile.
Korea surprisingly is using WhatsApp more than even prepandemic. Almost all my Korean friends are now WhatsApp versus like 1 just 5 years ago. Telegram is also popping up there.
But point taken. A few bubbles of differences but WhatsApp really does rule supreme.
I don’t disagree but don’t let perfection get in the way of good enough. SMS and standard email etc are all unencrypted. WhatsApp is encrypted end to end. You may not trust meta, or like them. But that’s millions time better than SMS or email.
Getting your parents on WhatsApp is a huge awesome step. Getting them to telegram or Signal or whatever else is a minor step comparatively.