I used to be an oil rig mechanic in the mid 80’s in NE Texas when it was near 100F with almost as high humidity, totoally friggin miserable, I basically reached the limit with only a 30 degree increase above the standard normal 72F working temps. Just cannot work much unless the humidity goes down, so I went west and worked in 127F temps in Vegas at less than 10% humidity, doable.
But I can work in -50 temps as long as I have the clothing, a much further temperature spread. I can and do work in the range of zero to freezing without a coat for short periods as I wear hi tech thermal underwear, conversely I cannot realistically wear anything to fight the heat, so going cold was the logical decision. Most people I run across just simply cannot acclimate to sub zero temps while I know I can adapt to real summer temps in a couple of days.
So in ending this discussion living in the cold isn’t for everyone, usually the weaker folks complain and quit. Such as how many come to Alaska and not even through the six month long winter bail out and leave.
I worked on a workover rig in North Dakota in the 80s and had a great taskmaster of a boss who thought exactly as you do...he always said he preferred working the bitter Dakota winters to the heat of summer: “I can always put more clothes on, but I can only take so many off.”