OLED is not as mature as it needs to be for larger computer displays where the same bright content may stay on the screen for hours at a time. While OLED has been in TVs for some time now the same is not so true for computer displays. At least not at a certain level of quality. Not all OLED are created equally just like not all LCD or LED are created equally.
There is no comedy here by waiting for Apple to make OLED reliable and of a certain level of quality. I commend them for their effort to do it right vs the lack of standards we see out there with HDR TVs. HDR is a joke because manufacturers made it a joke. Apple is trying to make OLED better and yes there is a lot of room for improvement there. Maybe you are not aware of it but OLED is very far from perfect in its current state.
I have a more affordable OLED 13" display and it's kind of garbage. Just saying it's OLED is not enough. As consumers we need to be aware that not all OLED are created equal and Apple is trying to create some standard vs just throwing in OLED to make a handful of impatient people happy.