Strength. Power. Speed. Coordination. Balance.
Yeah, looks like this kid has some serious ability in those categories. Check out his ROM. How many videos do we watch of some gym rat who posts his personal records only to question his ROM? Not this guy.
Back squats. Cleans. Snatches. Deadlifts. Learn these movements with a barbell set. You will not be wasting your time! Bodyweight calisthenics and kettlebelling have their place in a workout program. But so do these heavy lifts.