Not only, as the article mentions, does it fulfill a core requirement, but it's also rated as one of the easiest courses going in the student evaluations. It scores a 1.58/5 for workload, and a 2.43/5 for difficulty, both below the benchmark for the Gen Ed department (which itself is pretty low).
I'm sure many people taking the class have a genuine interest, but from my experience a significant number of students spend a lot of time finding core/gen-ed classes that are light on work (this is especially true if you've left your requirement to the last minute to complete).
(I'd link to the evaluation data, but you need a harvard.edu login, so you'll have to take my word for it).
Edit: Turns out the student paper backs this theory up - http://www.thecrimson.com/article/2013/10/9/hey-atlantic-5-r...