It might not be a good one. There are lots of factors that can radically contribute to obesity in some people. Hormones, stomach disorders, digestive disorders, etc. We have no way of knowing whether the particular person in question has these kinds of issues. So I think it’s reaching to assume EVERY person who is overweight or obese is that way because it is purely a failure of personal responsibility.
Mom always said, “When you assume, you make an ASS out of U and ME.”
Let’s also not let ourselves forget that there are plenty of coaches and whatnot that are both obese and have never played pro ball.