> climate simply hasn’t, until recently, required it.

I would qualify that as it hasn't required it since the invention of air conditioning.

Which also isn't strictly true; the high temperature for Paris on July 1st this year is identical to the high for the same day back in 2015[1], and there are several times since 1970 that the temperature was over 30C.

Other sources[2] indicate 1947 was just as brutal as 2019 and 2022, and the warmest night was in 1772 (27.5C)

[1] https://weatheronthisday.com/intl/paris/7/1

[2] https://en.wikipedia.org/wiki/Climate_of_Paris (standard Wikipedia reliability warning applies)