I often wonder where these veracious vegans are. I've yet to meet a vegan who has been evangelical, yet have met many omnivores who speak poorly of vegans. Is this a region specific problem?
Although, outside of that scene, I haven't often ran into them, so my guess is that most people are referring to the internet zealots, who tend to be an issue for any political, social, or cultural group, no matter how radical or mainstream.
as for the internet - it's full of opinionated zealots no matter what the cause.
The fringe is specifically what I'm referencing. I'm not saying punk in general is vegan, or hardline, etc. But the proportion of people within punk who are, compared to the general populace, is obviously much higher.
And I disagree that the scene is only a little more veg friendly than most, I'd say it's much more, except maybe scenes like conscious hip hop or hippy festivals.
Of course, I was specifically involved in very politicized punk scenes, so YMMV.
I have to give special notice to two of my vegan friends who are not like that, but they are a very rare exception to the rule.
Apart from those idiosyncrasies he was quite a pleasant chap - I had to respect him when he received some extremely painful medical treatment and he refused an anesthetic because it might have been tested on animals.
Two words: The Internet.