Hell, it puts me off a bit and I'm a dude.The idea that women would be put off by a porn section at an event that advertises shows where little girls are sexualised is insane. Hentai doesn't matter in comparison.
If someone goes to an adult anime convention, and hentai is the deal breaker and not strike witches memoribilia being sold then idk fam
I know what you're saying, but it's still not a good look. And there are people who won't even give the good stuff a chance because of that other stuff, let alone the porn. The anime community has a bad enough rep as is, no reason to needlessly reinforce that.
EDIT: Anyway, we all know where the line is in here so let's just be careful about it while having this discussion. Just remember that defending the sexualization of underage girls is an instant ban. We can talk about this without going there, and I do trust all of you, I just wanted to add a reminder on just in case someone gets the wrong idea about what is and is not acceptable.