Maybe. You can design for aesthetics, and/or for functionality. Sometimes, "rock" doesn't mean "is good"--think about the negative opinions some people have of [the term, or the actual] "rockstar programmers." In this case, I was thinking about "rock" as in a Hendrix guitar solo--doesn't really get a point across, but doesn't really need to.
(I had to click on the tiny tiny "about" link in the footer to find out what they do)