Unless you live in North Korea, China, Russia, UK, France, Australia or Ireland it’s still illegal to coerce or force someone to give up their personal keys or passwords, so this feature is still useful against some law-bound adversaries in free countries.
What are you trying to prove? He never said you're wrong, just the fact that something is illegal doesn't mean that it won't happen to you, just that it's illegal - those are just words written in a book somewhere. Even so-called law bound adversaries break the law all the time. A cop beating you senseless or breaking into your home is illegal, but it happens all the time. You're welcome to sue after the fact.
In a previous administration they apparently concluded that while the government can't violate your first amendment free speech rights, they can ask a third party to do so. So what makes you think that the CIA won't hire blackwater or the crips to hit your toes with a ball peen hammer until you tell them what you want to know, and then walk away having not violated your constitutional right to privacy and not incriminate yourself?
I don’t want to get into specifics because ultimately it just comes down to the logical argument that just because a strategy is not by itself successful against all possible threats it doesn’t mean it’s worthless. By this logic you wouldn’t lock your front doors.
The West just a few years ago declared that at airport entry points, no one is including their citizen is not protected by any law when it comes to providing access to your private stuff.
