There is good kung-fu and bad kung-fu. The same is true with all martial arts. You can spot the difference when you have enough experience.
I disagree that kung-fu in general is messy or sloppy. If you're seeing unfocused strikes and movement that seems like it's weak and uncoordinated, then you're probably watching poorly done kung-fu. And there is a lot of ...
Bruce liked Chinese food and used to have a lot of variety in his food. I don't know much about the specifics of his diet.
His fitness recommendation from the Tao of Jeet Kune Do is as follows:
Monday, Wednesday, Friday