For myself, I'm perfectly content with a bottomless mug of filter coffee from a diner.

Actually: diners! What a good example...

I would find it equally disrespectful if a Spaniard or an Egyptian posted something like "Americans have the worst diner food in the world."

Nobody needs to like the coffee or the pie in an American diner. But if they don't... whatever they like isn't really diner food.

For sure. I think there's some tragedy in it all just being called espresso. For many reasons, modern espresso machines aren't really producing shots by the same method as a classic machine. Improvements in pumps and temperature controls, not to mention grinders, are producing something that looks the same but may as well be a totally different drink. In the same way that an Americano isn't the same as drip coffee even though they may look the same.