'True' Metal-Heads?

Someone I was talking to was complaining about a particular gig venue not holding 'true metal-heads'. Trying to say if someone is a 'true metal-head' is nearly like trying to say if someone is 'normal' or not. It's opinion and culture-based and so varied. It's a subjective truth. I have several people I guess I'd consider to be 'true metal-heads' but all for different reasons, and others will disagree. I wouldn't consider myself to fall under that term at all, but I'm sure there are people who do consider me to be a 'true metal-head', and I'm fine with whether they do or not. In my opinion, though, the truest of metal-heads is a nihilist.