It’s the same IPS Black panel as the Dell, which is DisplayHDR 600 certified despite listing 450 nits brightness. So 500 nits is not a listing for “max” panel brightness."HDR feature"
max brightness 500 nits.
OOOO KKKKKK.... doesn't even meet HDR600 which is barely HDR.
Kuycon doesn’t submit its displays to VESA for DisplayHDR certification, but they also don’t have a web site, even in Chinese. Let’s not jump to conclusions. The G32P supports HDR video in macOS when you set it to DisplayPort 2.1 mode.
The only 6K displays that support greater than “HDR600” are the Apple XDR and the Geekon Hero 32.