Yes.

But quite possibly "greater efficiency" according to a fitness function that's not accurately mapped onto "keeping humans alive"...

I wonder if this'll end up in an equivalent state to the "tank detection neural net" which learned with 100% accuracy that the researchers/trainers had always taken pictures of tanks on cloudy days and pictures without tanks on sunny days? ( https://www.jefftk.com/p/detecting-tanks )

Who'd bet against the doctor/insurer neural net training ending up approving all procedures where, say, the doctor ends up with a kickback from a drug company - instead of optimising for maximum human health benefit?