All those studies about GUI usability were done in the early 2000s. Before phones. When most people were just learning how to use a computer. The idea of options certainly was confusing, because "clicking on things" was even confusing.
Yet today, we have a populous which, more and more, grew up with computers. And loves to personalize. And wants options. So just keep that in mind, all you frontenders, config options aren't necessarily bad. Ancient studies have little relevance 24 years later.
Sorry to hijack a bit, but felt it was relevant to courses, teaching, and the state of time in 2000 vs now.