>>/17579/
It is highly stylised and he does exaggerate but much of what he says is based on truth.
>>/17627/
He follows eastern teaching not western and there is quite a wealth of knowledge about that. There isn't so much regarding European archery because it was phased out sooner and it was not a martial art of the nobility(they used bows but only for leisure), this is why archery in Europe is so simple, it's a strong man firing a strong bow, it has nowhere near the finesse or depth that it did in the east.