Well the phone calls work on every device. I suppose there’s a case that phone numbers are non-standard, but I think it takes motivated reasoning to get there.

Well the phone calls work on every device. I suppose there’s a case that phone numbers are non-standard, but I think it takes motivated reasoning to get there. And the cross-device stuff is based on cloudkit, so it’s easy for third parties to adopt and get those benefits using apple id rather than additional signins. Of course that has some lock in, which I recognize is so offensive to some people that the upsides aren’t worth it.