Really hot and beautiful models exist.
They are just rare. They are the 1%. But out of 500M DAU, that means they are 5 millions, and they are the most popular because of their beauty.
The unrealistic expectation comes from the fact that people get used to seeing the top 1% because of social media.
Exotic cars are... expensive? A lot of the appeal of owning one is the perception of (and the very real) cost, but they are still what they seem to be.