Given this monitor was nearly $2000AUD, this IMO unacceptable and a hard pass as mostly non-gamer.
Why try and flog old OLED tech anyway, with TANDEM 4th gen screens and soon phosphorescent dyes expected to greatly reduce burn-in and power usage.
I can confirm this in the sense that I have been using a Samsung QD-OLED TV as a monitor for quite some time (settings: Warm2, medium brightness at 30/50 notches) (love the glossy screen and the poppy colors and the sharp text it provides) and there are absolutely no burn-in signs (the TV auto dimms on static content, so that maybe helps too; obviously the current OLED tech may still burn-in in static content at high brightness, if one would disable auto-dimming /the type of auto dimming that can't be disabled, AFAIK).
Buy why a TV? Another advantages are the relatively nice build-in speakers and the main reason: Large screen, which also allows for a further sitting distance, which puts less strain on the eyes.