Of course the trolls are wrong for trolling, but trolling is a fact of life on the web.
When I was a kid I was told to never link any online account with my real identity and to always regard every person encountered on the web as a potential bad actor. The article begins with the story of an 11-year-old whose identity is linked to a public Twitter account.
There is a distinct lack of recognition for the failures in parenting taking place here. Personal safety and privacy are necessities for a healthy childhood, a public soapbox is not.