It shocks me that a reviewer can diminish the burn-in problem. They dismiss it as though it doesn't exist, but it does and has caused my my LG 4k OLED TV that cost a month's income to be almost unwatchable after only 4 years - and LG seems to have no interest in resolving it on my set because I'm apparently watching too many programmes with static elements and have the brightness turned up too high.
It is still a problem, but manufacturers now know it is and add things to try to minimise (but not eliminate) it.
Yes, great quality picture, but I wouldn't touch OLED in any form again.