As always in the internet and in real life. It is customary for onlookers to side with the offenders in the hopes that they will not become the next target.
Opinion, be damned. If you want to take the literal definition of dumb, which is a being unable to communicate in any meaningful fashion, then clearly it's not dumb as I have well articulated my point. But if you care to take the figurative approach, dumb as a synonym for stupid, then again it fails for the same reason. I have well articulated my point. Trolls are not people to be embraced and coddled. They are to be whipped with shoe leather and brought in line, because their parents obvious failed to bring them up properly. And your "suggestion" that I simply ignore it, doesn't wash. For one, the trolling isn't directed at you. Secondarily, I have as much right to respond to idiocy(With the aforementioned shoe leather) as they have to dribble it from their maws. And thirdly, I don't care to have you tell me what to do, anyway.