Unfortunately, people tend to be less then kind when divorced from the consequences of their actions. It's easy to hate, bully, and demean someone you've never personally met. The earlier days of the internet were much worse in that regard, because people generally had more anonymity then they do now, what with the rise of social networks.
I'm just glad the guy seems to have taken the right lessons from his experience. Makes me hopeful that other kids will be able to do just fine too.