[1] https://olympics.nbcsports.com/2020/04/21/usain-bolt-beijing...
Usain Bolt did so on a special occasion, he explained he just didn't know where to eat
It's pretty obvious his average meal is not "fast" food, he would never have reached this level else
Looking at the figure, for example, one thing I noticed was the gap between the two upper points and the rest. It's hard for me to imagine there aren't some missing points there.
In other fields or areas, I think you have to start asking about things like fraud, other vice, or circumstances.
As you suggest, there's probably also some unique things about international football that make it difficult to generalize to other things. Everything is probably a little unique in certain ways really, but the incentives are so extreme and the play is very visible.
[1] https://www.firstpost.com/sports/firstpost-explains-how-does...