Decent video and kind of sums up my thoughts on when people say "HDR sucks on pc", you then ask them what monitor they are using and turns out it's a **** one that has some useless HDR400/600 certification and no dimming tech. of any kind
IMO, if you want to see what HDR can do, it has to be viewed on an oled/self emissive pixel display, even full array local dimming pales compared to oled for hdr imo.
When possible and with proper native HDR support, I'll always use HDR on either my AW QD-oled or LG e7 as it completely changes the visuals of a game to the point of it even looking "next gen", couldn't figure out why COD looked so bad one day and turns out HDR had deactivated, literally was like a ps3 to ps5 difference.
Sadly a lot of games HDR is **** poor though, some of the best ones are sonys ports i.e. spiderman, days gone, god of war, HZD, in terms of cross platform titles, main ones would be titles like division 2, mass effect andromeda, assassins creed odyssey, guardians of the galaxy, SWBF 2.