[zokier]

Lot of HDR tech is actually making sure that old conventional SDR sRGB looks "correct" (what people expect) on these newfangled displays. Lot of problems stem from lot of tech basically completely ignoring color management, even if wide-gamut displays were already a thing before HDR.

Basically if srgb content was just naively stretched to rec2020 it'd look garish and oversaturated instead of what the designer/photo/videographer intended. If it was additionally stretched to HDR, it'd look garish and eye-searingly bright.

Because the differences between HDR displays and SDR is so dramatic it is forcing everyone to scramble to do color management as the result would be pretty unusable otherwise.