You must of not had your glasses on as every review didn't say weak blacks and poor detail levelsEvery review i have seen has said what is expected of an IPS panel with 30 dimming zones, weak black levels and poor detail in dark scenes. Any that say otherwise don't have a clue what they're looking at, it's as simple as that.
The review video above he says that it is as close as lcd has gotten to OLED black levels.
In English weather you think majority of our viewing is in a bright room?
In the UK most people have the light on during the day in Autumn, Winter so yes the majority of our viewing is in bright rooms