I've played online, off and on, for probably a couple of decades and can not recall experiencing most of what that article is describing. Of course that doesn't mean it doesn't happen, of course it does, but as has already been said, ignore or move on to something else. This kind of thing has been going on since Adam was a lad and is not something peculiar to being online. Anyone who hasn't experienced a bully at school, or got picked on by the gang in the other street, or threatened by some drunk womble down the pub has probably led a pretty lucky life.
Also, I have a natural scepticism for any article which starts with ' A study finds...'
Only last year the papers were trying to convince me my beloved sausages were going to kill me because ' A study finds...'