Extreme?

[freakshownia]

This came up in a conversation with a vegetarian earlier today. What, if anything, do you think makes a vegan "hardcore" or "extreme"? Or does such a thing even exist? (As in, you either are vegan or you aren't). I suggested that not driving or taking medicine was "extreme", though the vegetarian thought that just not eating honey made someone a "hardcore vegan". What do you think?

[Edit: And by extreme I don't mean anything negative, just doing more than what would normally be considered practical.]