Are the specific suggestions made in the article “horrible UI design”? IMO it is good UI design to have a basic goal of people being able to use it without consulting with external resources, and not requiring them to know much more than is strictly necessary for the given task. The real fundamental problem is the marketshare of proprietary operating systems, not using them needs to be accessible, not a badge of computer literacy. The author is absolutely right that you should be able to format a disk and set up a network drive by just clicking through and selecting basic options about what you are trying to do.