Now, hold on a moment! This is the "Anime Discussions" subforum, is it not? No one is obliged to like (or dislike) any given show, FFS.
Most opinions given here (positive or negative) that I've seen have at least some rationale behind them. That's enough, whether or not anyone agrees with them. And even if not, no one really needs an excuse at all; sometimes you don't have an explanation for what you do or don't like, that simple. And no, you don't need to be able to produce art, to know if you like said art; that's just a bullshit assertion. It's not like anyone here has gone full-blown deconstructionist.
I'm not staff/admin, but for the sake of fuck, keep it civil, people! Feel free to argue all you like, that's what the subforum is for, but there's no need to be an ass about it.