What is "lean muscle" regardless of fat?
Thinness is not the goal you want to achieve. It's a very easy goal to achieve when compared to being a fit individual. Starve yourself and you're done.
You can not starve yourself into being a fit individual.
Yes, being fit, strong, and lean is harder than not being extremely overweight. But not everyone cares about that.
https://www.youtube.com/watch?v=c5ywwZlESOU
Chiseled abs and a penchant for energy drinks isn't needed. If I was to be critical, I'd say that low of a body fat % for long periods of time is counter productive to overall fitness and ugh: the shit you find in some energy drinks.