Yes and no. Yes, it galls me that people listen to songs and don't get or even attempt to get its real meaning, yet, at its core music is meant to be many things to many listeners.
Some people are just very passive music listeners and don't care to know everything about the song. They may listen to Maggie's Farm and simply like the way it sounds. However, that having been said, if they are running around acting like a critic and telling everyone what they think the song means without truly knowing for sure then they deserve to be schooled harshly. Otherwise, if they make no attempt to sound like a wisen-heimer and simply admit to ignorance then I can let it slide.
I guess I'm on the fence with this one, it really depends on the person in question and how they are representing themselves with regards to any song in question.