Can't tell if serious or trolling.
Yeah there are shitty people everywhere that listen to everything, but collectively there's no group of people from a music scene more hateful, bigoted, ignorant, and scummy than metalheads. It's a sad fact of life.
About 2 years ago, Kittie toured with ICP and Coolio, played to about 5,000 people a night who had never even heard of them, and there was no drama, no fans throwing things at the band or booing them off the stage. Before that they toured with Asking Alexandria and a bunch of Risecore bands and the same thing - no bitching, no kids acting like shitheads etc. Only in this undergound metal scene do people get butthurt about "untrue lineups." Kittie consistently sells records and is able to make money as a band (incidentally, the last Kittie album outsold BOTH Kreator and Accept's last album in the US). They also released a bunch of cheesy nu metal albums years ago and nowadays write more "safe" music by true metal standards, so of course metal fans will boo them, grope them (it's happened to them), throw things at them, etc.
FYI I'm not a fan of Kittie, but I do call it like I see it. It's not to say metalheads are all assholes, because that's not true. If anything this board is by and large proof of that. But there's a level of spiteful, nerdy, elitism that only really exists within this scene and nowhere else.