The actual words used were already vague enough ("ideas for a software project"). The answer to that would always be subjective. Why is there no trust in the author that he has a better read of the room? He definitely has more context of what the students were actually asking for. These are also, students; I'd give the author benefit of the doubt that he gave them a problem that would be most productive use of their time given their skill level. Maybe that's why he didn't consider web browsers or bug trackers.
FWIW, I think the article makes a good point but is poorly illustrated, especially for this audience. I've no doubt your average HN commenter has projects/scripts under their belt more complicated than a clipboard logger, maybe even on far tighter time constraints. But c'mon, these are students! If you work in the industry there will definitely be different causes for project under-estimation.