This only works if the UK had a bunch of ACs in the 80s but got rid of them all in the last couple decades because of some vague degrowth bogeyman.
I hope Europeans remember their colonial history because with how they are managing their economies they are going to have it revisited on them in a generation or two.
People from the global south like you forget how far north Europe is. Much of Europe never needed it. Now maybe it does for a week or two per year. Things will change.
Northern Europe's main problem, every year, is keeping people warm in the winter. Heat death in the summer is a novelty. Global warming will actually reduce excess mortality in Europe, because warming winters will save more people than hot summers kill.
On the other hand, people on the equator are FUCKED: https://ourworldindata.org/grapher/change-heat-death-rate?ta...
Is this informed by studies, or are you just assuming "global warming = higher average temperature = less cold"? Because that's not how the climate works. It's very well possible that global warming increases the number of cold-related deaths in Europe.