I don't have an HDR display, but the rest of the items you list are 'there' at least on Wayland.
> To achieve an effective resolution of 1920x1080 you're looking at a scaling factor of 1.5, and it just doesn't work well. It also increases battery drain on a system that already has battery life issues.
But I don't know the details. hardware acceleration in browser I think is somewhat new? Last half year or so, is it now by default? You only have stereo and max HD on linux with most streaming providers. No surroundsound.