Comment by shkkmo

I assume you meant "wet bulb temps over 90°F" because we face "wet bulb conditions" all the time.

There is a genuine risk that significant areas will face sustained wet bulb temps that will make survival without AC impossible there.

However, there are plenty of habitable regions that will not face those temps. Those areas may face climatic shift that decrease their carrying capacity, but there isn't any known scientific reason to think that climate change is going to make the earth completely uninhabitable and it is just fear mongering to claim otherwise.

Likewise, it irresponsible to dismiss the existential threat facing many millions of people because it isn't an existential threat to the survival of the species.