Yeah that's what I meant, they don't have the critical mass to really put it on the map here. It falls back to SMS for Android recipients of course, but group chats and pictures/video are out of the question.

So in practice nobody in my circle uses it whereas Whatsapp is huge (still). I don't have iOS but I would notice if I got SMSes. The only ones I still get are insecure 2FA and spam.