Some people are jealous of the popularity and good fortune of others and need someone, anyone, to lash out at, especially if their lives are not quite as illustrious.
It is the way of message boards, Joe....people bashing other people. Remember that old saying, "How to start an argument on the internet...1. Say something.
2. That's it."
We might not truly understand what was written, how it was meant to come across. Oftentimes stuff some find offensive was meant as humor. Then again, some people might value their opinions more than they are really worth....
It would be nice if people were more thoughtful when disagreeing, but they aren't many times. We all come from different backgrounds, different locales....and it takes a while to understand that not all words mean the same thing to all of us.