All things that do not evolve are essentially dead. Kung Fu or any other martial art is no different. If you practice in a stagnant manner or that such and such technique is the answer to all situations, you have failed.
For example, you have two practioners A. LARP Kung Fu B. MMA/Sanda/Reality based Kung Fu
Practioner A and Practioner B want to learn to stop a double leg takedown. The Kung Fu answer is drop into horse stance, drop and elbow to the back of the head. Reality based answer is the sprawl.
Now most reality based arts will drill this until the sprawl comes naturally, the LARPer will have someone come in slow and unrealistic while he postures and makes it look good to the ignorant eye, convincing the naive this would actually work.
Now the reason I distinguish between LARP and reality is that there is a huge difference and someone who is blinded by an agenda is the only ones who don't recongnize this. But the big difference is there are many more LARPers in Kung Fu than in MMA, and until this changes, this attitude will continue.
"The hero and the coward both feel the same thing, but the hero projects his fear onto his opponent while the coward runs. 'Fear'. It's the same thing, but it's what you do with it that matters". -Cus D'Amato