Comics fans? Frank Miller fans? Bizarre viewpoint, I gotta say.
No. Obviously.
What's obvious, to me, would be the assumption that 99.99% of genre fans queuing up for the rare chance to meet Frank Miller in a comic convention would be perfectly well adjusted "normal" people of all backgrounds, only interested in meeting a literal icon of the medium.
The 0.01% chance of some bellend being a bellend would likely have the same prospect of occurring in your local Tesco.
I'm talking about the real world here, where decorum and law are generally respected publicly, not referring to the kind of cowardly guff that's spouted online.
As an aside, the proportion of Miller fans who have purchased or even read 'Holy Terror' (I haven't personally, so can't pass comment) could probably be considered a rounding error.
Feel free to disagree of course, but I'll stand by my opinion on this one - the entire subject is utter nonsense.