I know this doesn't refute the point the article is trying to make, but it doesn't seem that unreasonable to me that an underclassman might not get into a highly sought after elective. A lot of the "fun" electives when I was in school were little passion projects taught by one professor for one or two small sections a semester (or maybe only one semester per year), and while I agree it sucks that not everyone can take the classes, I wouldn't want them to die out because of complaints along the lines of "if you can't accommodate everyone, don't offer the course". Not that the article is saying that should be the case, I just worry that too many complaints about this kind of thing just puts pressure on the good professors who put enough effort into a class that a bunch of people want to take it.