>People who believe that the only thing that makes something art or not is if it conveys a message, and cannot fathom how something created solely for its aesthetics can be art
>People who cannot tell the difference between complexity in a composition sense (= chord progression, melodies, counterpoints, rhythms, etc) and technical difficulty (= fast notes, large intervals, difficult positions on the instrument, etc)
>People who believe that knowing music theory will make you unable to write original music because you'll be only able/allowed to follow the so-called "rules".
>Musicians who refuse to learn some things about music just because they "don't need it" to make the kind of music they make right now
>People who only use the lyrics to judge the quality of a song/piece