Part of it is ignorance. Part of it is scale. And part of it is our media (and anecdotal posts) saying that many Europeans (as a whole) don’t have AC in their homes, which is why the heat waves are so dangerous. I’m sure it’s annoying, but it’s kind of like an American getting annoyed if a European only thought of the US as a whole and not per state, as states are comparable in autonomy and size to most European countries. I wouldn’t expect you to know specifics - New York is very different than Florida, which is very different than Iowa, which is different than Alabama, which is very different than California, etc. Hell, the main regions of California alone are all very different from each other.