[danans]

> How else do you describe a large population of people?

It's not hard, describe without superlatives and hyperbole. Don't use phrases like. "they are the most X".

[silisili]

People notice what they see with their eyes. If you only had one trip to the US, and spent your time in say, Arkansas, imagine what you would write America was like, using superlatives.

It's not wrong, but it's also not universally true. That's how observations usually work.