In one part, the pro-privacy part of me is of course aghast at the whole idea.
However...
If you "read the room", there have been increasing noises from the global political world in recent years, and perhaps especially in the US.
So if you think about it that way, it might be a case of Apple jumping before they were pushed.
I mean, let's face it, if you wait for the politicos to come up with a solution and force it through with legislation, they really would put in actual backdoors and encryption bans given half the chance.
I suspect others, such as WhatsApp, might begrudgingly follow in due course.
There's always GPG and a whole litany of other tools and apps for those who know what they are doing in terms of privacy.