Without even watching more than several seconds I'll agree. Plus PBW, then the brushes would be optional.
Seems like it would be a hell if a lot easier if he had the right size bottle brushes.
I've cleaned enough filthy bongs over the years to smell that vid. PBW at least leaves your hands and sink fresh, clean and scent-free after, and the piece spotless in less time than that vid goes for!
Edit: in Australia we call that combustion filth 'death'. Some people dry it out and smoke death. Sick, sad world.