I was expecting something much worse due to your reaction. While I think that the comment made was rude, probably not thought-out, and not constructive, I don't believe it warrents a banning. I know it takes a lot of guts to put your work out infront of thousands of people, and hearing something like that hurts. We may not like some of the opinions we hear, but that's part of the risk that is taken. It's a necessary evil in the growth of an artist. For me personally, I would rather hear comments like that about my own work than comments like "It's perfect, don't change a thing."