I'd absolutely suck at trading condors and you'd think I'm totally dumb, but there are some setups that I've studied/tested and traded so many times that I feel comfortable trading those only.
Likewise, I think that no one can beat you with understanding synthetics or microstructure, or even overall the options domain, but if someone focuses on just one strategy and studies it over and over, they may be able to do better than anyone else who didn't spend much time on that.
Personally I don't like his hedges expiring sooner than his naked puts, but I suspect that with him frequently reviewing his risk, he may be able to adjust those and always stay hedged, whether sometimes it may cost some, while other times he may be able to harvest some theta. I have no problem believing that he doubled one of his accounts trading this specific strategy, even though he may suck at trading everything else, like most of us.
At least he did explain his approach with details that anyone totally clueless wouldn't be able to. He might've just been too cocky in asserting his superiority in trading options