Personally, after using my 2021 iPad Pro since launch, I'm overall disappointed in this incarnation of the "Liquid Retina XDR display." Watching any HDR content (whether videos or photos) is phenomenal and way beyond any other iPad. General usage in light mode is no different. General usage in dark mode is a bitter disappointment.
While it isn't nearly as bad as many of the pictures on here make it out to be, it is very noticeable. Every control in the notes app has a haze, off-axis viewing is cloudy, and when using a mouse there is a massive square of hazy light around this tiny mouse pointer. There must be a reason for it or Apple would have tweaked the algorithms, but I don't notice this issue really at all with my MacBook Pro.
I know this isolated bloom is better than full-screen bloom of traditional LEDs (I suppose), but I find the overall experience a large compromise and don't plan to buy another iPad until they move onto a different display tech.