Stringy - I totally get what you're saying. The thing is, as a working copywriter, I might choose to use the phrase "screams elegance" if I was trying to make a certain point. I might be trying to say that the type of elegance I'm writing about is not traditional, white glove, pinky out kind of elegance, but rather a modern kind of in your face elegance (perhaps even an "ironic" elegance!)
When you write in or about things to do with the creative fields (fashion, music, movies, design, toys, fun products), you often seek ways to push the boundaries - and play with language. So juxtaposing two seemingly opposite words might create the image I was going for. Does that make sense?
Of course, there is a whole lot of bad writing out there (including mine!) so I do understand what you're saying. But when I write copy I think very carefully about every single word ... and then I am edited by brand managers, producers, marketing people, and the guy who changes the toner in the copy machine. Often the end result has been so monkeyed with it leaves me quietly screaming while smiling at my editor and praying they hire me again.
Sorry. End of copywriter rant!