You asked peoples opinions, so they didn't do anything wrong, they just voiced their opinion.
Chances are, he is probably trolling, you asked a question that allowed people leeway to say things like that without getting to much flak. In fact, even rebutting the comment could cause you to have flak (I could kind of see people on the internet going "You asked for an opinion and as soon as you disagree with it you berate them"). Generally, by asking a question like that you've opened doors to haters, what was the primary purpose of the question anyway?
Either way, in this case the best way to deal with haters is to not put yourself in a situation where you're supplying "bait". Simply put, make sure you're talking to the right people and you have a clear purpose in mind. I don't really see the point of the question and so that's why I consider it troll bait.