1. Poor color grading / mastering. For example, many of the Harry Potter movies have an “artistically” dull color scheme and don’t take advantage of HDR much. So they don’t look that different on a good display. Plenty of other movies don’t even try to take full advantage either. (Lots of movies where black isn’t actually an inky black, or where shiny things don’t translate specular highlights into brighter HDR)

2. Marketing shitty HDR displays as HDR. My monitor is “HDR” but is only HDR400. This really doesn’t look that good. Also, HDR fundamentally doesn’t really work that well if the TV doesn’t have enough local dimming zones. If you only have a single backlight, you can’t really make a diamond ring look sparkly. On an OLD, just the diamond will be displayed brighter, making it look shiny.

However, for media that is graded well and published in a high bit rate (4k Blu-ray), it looks outstanding on a good HDR display (like a Samsung s90c)

Anyways, I’m pretty confident I’ll be able to get a better TV in the future. For example, handling motion without jitter, handling reflections with high ambient light, simply getting brighter and handling burn-in better… and besides that, the display technology that looks the best (QD-OLED) has yet to make it into cheaper models most people buy.