Nope, WhatsApp works just on phone number, not an email. It would have given them perpetual anxiety. So they would have made WhatsApp work only with “Gmail” ad

Nope, WhatsApp works just on phone number, not an email. It would have given them perpetual anxiety. So they would have made WhatsApp work only with “Gmail” addresses instead - with Google Login and in a Chrome Desktop app only (of course) - and they’d have then shut it down after few years. Or people might have stopped using it before the shutdown.