Eh, I've known people get in very similarly preachy moods about other types of music that they consider to be 'the best' and the fact that other people can't recognise it. One person on my flist (who is no longer on my flist, but not for this reason) ranted about how people were constantly listening to rock bands that don't feature long meedly guitar chords that require lots of complex fingerwork to do, since according to her this was the most skilled form of music, and anything that lacked it - i.e. anything with any energy - was lame.

Luckily for me, I consider the greatest musical work of all time to be the Birthday Party's 'Junkyard', and I long ago came to terms with the fact that everybody else thinks it's a bunch of atonal shit.