because he's probably right and he's staying on topic without attacking anybody. you're so bothered by what he has to say about the series at han that you lash out at him, when he hasn't don anything wrong. nothing he has to say is the kind of thing that should make you angry at him. he's commenting on the series at hand and how it relates to aspects of Japanese and global culture. just because his points are things you never thught of before or have the privilege to not face every day doesn't mean you have to start getting so aggro.
his points are supposed to b the kinds of things that make you think about how anime relates to the real world and vice versa. if you're not inclined to do that, then just pass it by. but i think it's unreasonable to get all upset at him and demand that h shut up.