For both monitor types (I have woled and qdoled) if you play bright content like a action movie or a bright colorful video game, the black level of the qdoled is un-noticeable and you don't see reflections on the woled, so basically it doesn't matter.
But what about dark content? What if you watch a horror movie or horror game in a bright room? On the QD OLED you can still see the content, the blacks just look grey but you can still view the image. On the woled you can't see anything, the game and movie is completely unwatchable due to reflections
So in summary if you're watching bright content then it doesn't matter which screen people use. If it's dark content then qdoled can technically still work, though watching on darkroom is preferred but woled is completely unusable with dark content in a bright room