The quality of a theory on principled grounds is ultimately the most important thing about it. This means that the most important reasons for rejecting nuance are the ones just outlined. However, there is more to theory and theorizing than whether it is good in this principled sense. Theory also has an aesthetic or stylistic aspect. Here, too, we find that nuance blocks our way. This is most obvious with the nuance of the connoisseur. Connoisseurs call for the contemplation of complexity almost for its own sake or remind everyone that things are subtler than they seem. The attractive thing about this move is that it is always available to the person who wants to make it. Theory is founded on abstraction, abstraction means throwing away detail for the sake of a bit of generality, and so things in the world are always “more complicated than that”—for any value of “that.” Connoisseurship gets its aesthetic bite from the easy insinuation that the person trying to simplify things is a bit less sophisticated a thinker than the person pointing out that things are more complicated.
If you want to read the full essay, it's just online on the author's personal site