The AT&T Data Breach Shows Why RCS Can’t Be Trusted and the Downside of Apple Adding Support for It in iOS 18
"Eddy Cue doesn’t lose many arguments but he lost that one. All of the effort spent pushing Apple to support RCS would have been better spent pushing Apple to ship iMessage for Android. And without a supported iMessage client for Android, that role ought to go to WhatsApp, not RCS. WhatsApp is free, secure, and works ... https://blog.numericcitizen.me/2024/07/18/the-att-data.html
@numericcitizen WhatsApp is the default messaging app people use in most of Europe and the UK. Quite a few businesses are using WhatsApp as primary communication method, including big ISPs like Virgin Media.
I think most of the people using iMessage are doing so by accident.