It's those people, whether through jealousy or hate or whatever, that tries to stop you from succeeding. You're giving valuable info, contributing. You're not hurting anyone, stealing anything from anybody.
Saying a name is worth 0 shouldn't be an insult to anyone. It's your view and some may take it as harsh, but at least you are expressing your true thought. We are all here to learn and share. People have the right to disagree with your appraisal and appreciate it. The civilized people. Then there are those who libel you. The (I can't find the right word).
Just do what you're doing. I bet 90 percent of the people would agree with that.
No need to get mad either. Laugh at it.