It makes me a bit sad to watch that clip. It's clear he doesn't understand what kung fu is.
He laughs at moves like 'Tiger claws' and 'monkey fists', but HIS teacher uses colorful names like 'chill dog' and 'jiu claw'. A name is just a name- the training that goes behind it to make it effective is the what 'kung fu' means. It is a valid criticism that many Chinese martial artists have an overestimation of how much fighting skill they actually have- but that's just because of a lack of actual sparring and fighting experience, not the techniques themselves (SURELY everybody knows that a tiger claw to the face would hurt, that does not need to be proven?)
He says that when the two kung fu guys fought, it turned into an MMA match...
Actually, it turned into a fight. 'Hammerfist in side control" is not muay thai OR BJJ - its fighting. MMA guys fight- so it looked like that.
Simple really.