You’re close. The real truth is that most average people do not like to date too high above their perceived range of attractiveness. This bears out in many studies but people are attracted to 8’s and 9’s but won’t date them and instead mostly date people that are more normal 5,6,7’s.

Then we look at the opposite side of the coin, 9’s and 10’s don’t even want to date each other. And for good reason. Extremely attractive people often cross a line into narcissism or being too busy to hold a relationship.

So two factors: 1. Most people aren’t extremely fit and so don’t want to date people whose lifestyle does not match their own, we’re all also slightly insecure. 2. Extremely attractive partners tend not to be good partners. The more people that are attracted to you, the less that date you. Also that’s out of fear of competition and effort so it’s not worth it.