There's something so uplifting about this version of the song that makes the day just that little bit better, and the performance removes some of the (intentional) creepiness/wrongness of the original, turning it into a straightforward song about a teenage crush on an older woman rather than obsession.
These guys never cease to amaze me with their sometimes incredible, sometimes hilarious, and sometimes downright inspired covers of popular songs. This is one of those times.