There are track cyclists out there who can squat over 500 pounds, some of them are very muscular and strong and they do some serious weightlifting as part of their training....I agree with you about the part that there aren't too many people who can squat that much, majority of people are doing half squats and quarter squats which shouldn't even be called squats. Very few people have the mobility to go below parallel or even parallel. A squat is not a squat unless it's done at least down to parallel.