But it is such a strange, superficial flood of propaganda; preaching is perhaps a better word. The main concern remains heat retention and that's what buildings will remain optimized for.

My house has 65 cm / 2 ft stone walls, which makes the normal temperature changes throughout the year very gradual because of the enormous thermal mass of the walls. But once the walls heat up during a prolonged heatwave (which are becoming more frequent because of climate change), AC becomes remarkably ineffective at cooling because the walls will continue radiating heat into the rooms. The walls used to cool down during the night and provide a very nice thermal buffer during the day, but with elevated temperatures even at night, that doesn't work anymore.

"Just install AC, brooo" seems like something coming from the crowd that doesn't want to address the root problem.