silly as the moniker "troll" may be - it is a generally accepted term for a specific type of behavior on the internet. It doe not and never has depended on being anonymous.

nor does calling a troll a troll equate to holding the "higher ground" morally - when it is true it is merely identification of a behavior.

However - this is a much a judgement call as other types of interaction - such as gender bashing or sexual harrassment - where intent and perception can be radically different.