I think they call it cultural marxism...

I realised it's the same mindset as music purists but with real life impact and far reaching consequences.

Being an elitist is like being part of a music subculture that believes it has the best taste in music and that all other music is inferior, maybe because the person believes the genre to be technically superior, associated with high ideals or just trendy.

The adherence to that certain genre of music becomes an obsession and the person seeks to further identify with it believing each abstraction to be more virtuous or purer than the last until they are listening to total crap and are completely out of touch with what good music is.