I don't think it's a big deal to not know about it, but acting like only people who follow Disney movies would have heard about one of the biggest pop culture phenomena in recent memory is just lol.
Right, mentions of the movie and song were everywhere on TV and probably the radio. I'm not saying Dan is an asshole, I just am surprised he didn't know what it was. I would think that a movie buff such as Dan would have heard something about it, or seen it mentioned on the Oscars.