As a regular Apple defender, I don't think most of us give a shit. I mean everyone I know uses WhatsApp here. I use iMessage within my family group because we all have iPhones but there appears to be absolutely no problem whatsoever with people anywhere. It goes "hey are you on whatsapp" ... and the problem is sorted.

RCS is another one of these shit shows. As I said elsewhere on this thread, I used an Android recently for a couple of months (just so I have a right to bitch about it) and when I switched back it broke SMS for me. I was only using SMS to activate WhatsApp.