I love metal, but maaaaan fans take subgenres too seriously. I once saw a bar fight in my very peaceful city where one guy was shouting “That’s not sludge metal! That’s stoner metal! You don’t even know what sludge metal is!”
And I find myself doing that shit, too. I was talking to a buddy a little bit ago and realized that I had just said “I’m currently listening to a German symphonic folk metal band, but the vocals are pure black metal.”