I feel pained reading that comment. People need to grow up. If they were giving as much attention as they give others to themselves they won't be so depressed and lash out at anybody they deem fit.
Take it as an immature adult rant. These people have mental issues that's why they see a reflection of themselves on others.
Try not to let it bug you. After all, you can't control other people's actions and your mental health stays improves as long as you ignore them.