I think you're right, and in addition to that there is also a lot we could do other than AC. Just having some shade from trees already helps a lot. Modern cities can be a man-made hellscape with regards to heat. But we did that to ourselves.
I for once feel better overall when it's 35c outsides airco or not, but people tend to think I'm being funny about that
It's fine if temperatures get lower during the night, but 25°C at night and 35°C during the day leaves little for cooling the infrastructure (roads, buildings), and constant warm temperatures are unbearable if you cannot even get in the shade when you want to cool off. Then, 35°C is also very hard to manage with high humidity.