Well, babar-san, to throw in my two cents worth, don't be too harsh on us. I've heard that all before and don't get angry about it. Trust me, it's not worth spiking your blood pressure over. For decades, Americans have been conditioned (or brainwashed, depending on your point of view) into believing that animation is only for little kids and can't (or won't) be taken seriously as an art form. As for the generic, little cartoon bunnies and cute little un-offensive charactatures of human beings engaging in dry humor and banal diolouge and whatnot, blame Walt Disney for that. It's what generations grew up on.
Another factor to take into consideration here is our insanely puritanical approach when it comes to entertainment mediums, i.e., TV and movies. Because Americans subscribe to the narrow mindset that animation is only for kids, they demand animation studios produce stuff that's as unoffensive and nonviolent as possible as so not to shock the poor little kids who watch it so they won't be horribly traumatized and grow up to be deviants. At least that's what they think. Parents groups and bible thumpers are particularly obsessed when it comes to being watchdogs and protecting our youth from all evils, either real or imagined.
Point three: This is just my opinion since I've never visited AWN, but I suspect American animation fans are secretly jealous of how gorgeous Japanese animation is, and that leads them to hate the medium because they know deep down that the slop we produce will
NEVER come close to even matching, never mind surpassing what the Japanese produce. Of course, we're not all narrow-minded, if we were, anime wouldn't be a fraction as popular as it is today with fans hungering for more like a drug. So, babar-san, just ignore those idiots and leave them to their foolish viewpoints which only exposes their ignorance for all to see.
I hope my opinions are of some help to you.