I would only wonder why wouldn’t you question everything? Aside from those things that have an easily verified “physical” basis, I mean? If they say “iMessage is encrypted”, that’s just them and they don’t go out of their way to provide details. So, do you not question that?Anything that involves more than just them and they go out of their way to provide details on I tend to question. This feature smells funny....just as funny as some of the internal things that didn't smell right and were not. Apple is not your friend, nor are they concerned about your best interests. They care about themselves and their money before anything else. If they are pushing this its not because they care about the issue. They either are being forced to do in a scenario like the government telling them they are going to push for backdoor legislation and this was a compromise, or some other reason that benefits them or they are being forced to do. This benefits them somehow.
I know you will argue against this. But the reality is that Apple is seen differently when you go from being it's biggest fan to an employee and find out how much they really don't give a crap about us or doing the right thing. It's not the company you all hope it is. I learned you never should work for your heros.
Actually, I guess they do go into some detail.
How iMessage sends and receives messages securely
iMessage sends and receives messages securely in Apple devices.
support.apple.com