I can't watch the Video in question....

But ShenFa is an integral part of all styles of KungFu. If you understand the method of generating power for a particular technique, then the correct Shenfa is implied. By exagerrating the Shenfa you will increase potential for explosive power.

I wouldn't try copying Wugulun Pais shenfa as it is very specific, but if you understand your own move doing it with Shenfa is easy and essential.

If the video exagerrates ShenFa it is not neccesserily performance...Depends how it does it. Many people do this.