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 ...
I was going to leave this as a comment, but I had more to say on the subject.
First, you'll want to look at my two answers to similar questions here:
Could a non-Buddhist person become a monk/master at Shao-lin temple?
Training martial arts in china
In short, yes you can go to Shaolin temple and train there with the monks. A junior monk will be assigned to ...