At least on our TCL (which has an array of thousands of back lights) some of the unhance options actually need to be turned on.

We bought it because it has crazy high brightness (it is in a bright room with direct sunlight hitting the panel while we are watching it), and while it can beat back the sun, it cannot do so by just turning all the zones on 100% because it would melt or something.

So, if all the image slopping were turned off, the contrast ratio would drop 100x, and the TV wouldn't really be fit for purpose.

(For when the sun is not actively trying to kill the panel, I have a de-slop shortcut setup. That also has the backlight enhance stuff turned on -- as low as possible -- to get true black on the LCD. It works OK. OLED is not quite there yet for this corner case.)