That's a bit of an overstatement and really depend on who you ask. I'd say that no-one uses WhatsApp. I know exactly two people who uses WhatsApp, but that also not representative of their actual marketshare.
I see that it’s more limited to Western Europe but it really is dominant in a lot of markets.
But that’s not really the point, the point is that also in the markets where the network effect causes the majority of people to use Telegram, Viber or Facebook Messenger, they’re mostly not using SMS, because even if it is free, a messenger service is better.
