To add to that point: Linux exposes a lot of information in general. That's great for me as an experienced user, but is certainly overwhelming for the "normal" computer user.
GNOME is trying to de-mystify the Linux desktop and I think they're on the right track, but they don't have widespread support among the Linux community. A lot of people use and/or like it, but a very vocal group (is it a minority? I don't know) is opposing their approach. They (this certain group that's well represented on e.g. /r/linux) sometimes seem to dismiss any work on UI or UX as not relevant or limiting their freedom.