One more positive interpretation of Apple's research interests here is that devices like the Watch can better differentiate between "the wearer just fell and we should call 911" and "the wearer is playing with their kids".

nuclear power generation is pretty beneficial, but that doesn't justify the existence of nuclear weapons.

"Can" does not necessarily mean "will", especially for Apple. I wouldn't be surprised if you're describing a feature slated for release in 2037.