It'll be fine, especially in EU. It's much easier to adapt and to make renewables more economically profitable than to accelerate decarbonization by raising cost of living.
Even if few days get 10C hotter in the summers, more and more houses will retrofit themsevles with ACs much like Singapore. I live in NL, and I can def see a future where District Cooling[1] becomes a thing.
If something is bound to happen, I think a better way to spend energy and money is to prepare for it. In that sense, I would like to see a study on which crops we as a human species could rotate too, what new lands could use investment and how should new housing and public infrastructure be built than constant articles like these which presents no realistic solution.