Yes me. I bought the Dell P2725QE - so far trying with MacOS 26 Dev Beta and it's enabled me to use MacOS again.. it's not perfect in terms of visual stress symptoms but still fiddling to find the right settings for me.
I have the brightness set to 100% and using Iris Mini to reduce the brightness and control the colour temperature.
I'd say it's now giving mild visual stress symptoms whereas previously it was completely unusable for me for more than 10 minutes, so I guess the panel is removing the requirement for any dithering.