Another person already noted that you are not required to run the air conditioner, just have the option to.
Air conditioners are also not a major factor in housing affordability. Very affordable places in the US and around the world have AC. This is more akin to having proper heating in the winter so that you can function. Just like winter heat regulation, without this sort of cooling regulation, people will suffer and some will even die. It’s not like renters have a lot of power in this market to shop for alternative housing.