'hugely overblown'.... I shake my head when I see comments like these, because it encourages ppl to buy OLED thinking it's not a problem. TBH, maybe LG have solved the burn in problem with newer models... But 2017/18 models will last about 12 months before an image will be burnt in permanently. Maybe it's the Netflix logo, or perhaps the sunrise logo - but your tv will start to retain images after about 12 months, regardless of how many times you run that pixel refresher, and you will be able to see the burnt-in images in normal viewing, particularly when orange, red, or grey colour/images are being displayed on screen.
Fairplay the LG though. I'm on my third screen in three years, at no cost. After 12 months or so, when images start to be retained on screen, I shoot LG an email and they send someone out within a week or two to replace the screen.