This is ridiculous! I have seen kung fu practitioner having very good balance and flexibility as well as great body control.
For example the ability to balance on a pole on one leg allows better power when someone throws a kick. That and the horse stance is great for base strength which improves plyometrics.
The style of hung gar inspired various forms of karate while pangai noon kung fu was the ORIGINAL version of uechi ryu style karate.
I find it very weird that kung fu has such a bad rap despite the fact that it has physical culture and cardio training. Morning times Shaolin students run stairs for morning cardio which lots of athletes do. That and shaoiu jao is their judo and chin na/eagle claw is their aikido.
Look real kung fu masters are built in old age:
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