Just tell me if you can find OLED professional displays with high peak brightness higher than 1000 nit, 4/5K resolution, and wide color gamut in 11~32 inch display. How come people cant really bring anything to support their claim without proofs. You even said that your laptop is not bright.
Beside, maintaining the brightness with OLED is another issue, keep uniformity, and reduce power consumption are another issues of OLED.
This is why there aren't any professional grade OLED with high specs and not even well being used.