Air conditioning units actually condition the air.

I grew up in a house that had an air conditioning unit and an evaporative cooler (we called it a swamp cooler). Swamp coolers are awesome when you live in dry place. Only when the humidity gets too high you need to switch over to the AC. Swamp coolers are cheaper to run so cue arguments on trying to get my parents to switch to the AC when it starts getting humid. 😆

Capitalism tries to get as much out of their employees as possible. Meaning employees fear of losing your job of you don’t get the highest rating. And if you are in the USA that means losing benefits and quickly running out of money. Give employees the highest rating, unless it actually bad, because they are forced to live in capitalism.