Playing the drums is very much like speaking a language. So much, that most of the greats often use this analogy. So when you "speak" you want to be able to communicate "clearly." And that applies to playing the drums. When you say something behind the skins, a fill, or a rhythm, you want it defined, maybe intellectual, balanced, and sincere. Because that's what we like to hear when we listen to someone talk.
While eugenio's input was very vague (1. not clearly or explicitly stated or expressed , haha the irony) , I think what I just explained was his point.