It's kind of strange to me that Apple and Google are having the same sort of problem with their phones. My 3 year old HTC M8 works just fine. My wife has one the same age, and she uses the hell out of it every day. No burn in, everything works, battery still holds a charge. And one of these new "problem" phones costs almost twice what we paid for our HTC M8s ($450 or so).
Going back to screen burn is reminiscent, as the author pointed out, of old CRTs in the late 80's and early 90's. I thought we'd moved beyond that. Guess I'll be waiting a while before I "upgrade" my phone.