I think most people run their TVs too bright, usually because they use them in spaces with terrible lighting conditions (i.e. TV mounted too high above a fireplace facing a west-facing window). I think it's easier to control the lighting in my house than it is to make my favorite TV show look good on an LCD.
Obviously that's still a valid use case, and one where LCD genuinely makes more sense than OLED, but my issue is with the displays being touted as "OLED Killers" when they aren't; they are displays that excel in a very different set of circumstances than an OLED. If I replaced the 8 year old OLED in my basement where 2,500 nits of full screen brightness would be downright painful to look at, the RGB miniLED panel would be a straight downgrade.
The first thing I do to test any LCD panel is fire up an episode of Star Trek: The Next generation. Invariably, one of two things happens as soon as we are presented with an exterior shot of the Enterprise
1. LCD backlight bleed makes space look dark grey/blue instead of black as originally intended.
2. The localized dimming kicks in, presenting truly black space, but rendering the stars (which are smaller than the smallest local dimming zones) super dim or nonexistent.
These latest generation RGB local dimming LCD panels being touted as OLED killers still fall under the 2nd scenario, they don't actually fix the problem at all. LCD is functionally a dead end when it comes to picture quality.