Never heard of this guy. He is in excellent shape for 61 (or any age, quite frankly), but I'm suspicious about whether or not he's being honest about his age. It's definitely possible to still look very good at 60, but perusing his youtube channel, it looks like his fitness journey began in 2010. Or at least, that's when it kicked into high gear. That means he was already in his 50s when he STARTED doing acrobatic calisthenics and then steadily progressed throughout his late 50s into his 60s? I could be totally wrong and the guy could be thoroughly documented, but I can easily imagine someone thinking they need a hook to make it in the social media age and adding a couple decades to their age for attention.
That fall at the beginning just doesn't look like the type thing a 50 year old just starting out a hardcore bodyweight routine would be able to endure and quickly progress through, but obviously I could be wrong. Props either way.