This is mostly a reply to bittermarch (Tumblr won’t let me tag them), but is also worthy of being a standalone post:
I’m not a Nickelback fan myself - although I don’t exactly hate them,
either. It’s okay for you to personally not like Nickelback, but it’d
be wrong if you were to belittle or judge other people for liking
Nickelback - which is pretty much how I define music elitism.
Let me use some examples based on my preferences. Metal elitists, for some reason, like to really hate on Avenged Sevenfold. One possible instance of hypocrisy would be someone who purports to be both a metal elitist and a social activist heaping hate on Avenged Sevenfold and using various problematic comments that M Shadows used in interviews to further their hatred of the band, whilst completely ignoring the fact that Dave Mustaine from Megadeth has made some even worse comments strictly because Megadeth is seen as True Metal™.
Another example is with someone who purports to be both a metal elitist and a social activist heaping hate on Avenged Sevenfold for supposedly copying other rock/metal bands, whilst completely ignoring the fact that Led Zeppelin has shamelessly nicked off black blues artists and did not have the decency to credit them (many of who were still alive during Led Zeppelin’ heyday) simply because they see Led Zeppelin as “rock legends”. Being both an Avenged Sevenfold fan and a blues fan, words cannot quite express just how much such double standards tick me off on two different levels!!