I think you're essentially right but sometimes I look at the Linux panels and wish they looked a little less…burdened with aesthetic growing pains or like…aesthetic arrested development. They don't have to be skeuomorphic or frutiger aero or like, keep up with the Joneses, but config menus in Linux are often one of those little reminders, no matter how trivial, that this isn't a polished product but a humble labor of love. It's endearing. But sometimes it feels like holding a toy from the CVS when you want a Transformers from Toys R Us lol.