I think I have to agree with Chrono on this one...
In Internet slang, a troll (/ˈtroʊl/, /ˈtrɒl/) is a person who sows discord on the Internet by starting arguments or upsetting people,[1] by posting inflammatory,[2]extraneous, or off-topic messages in an online community (such as a newsgroup, forum, chat room, or blog) with the deliberate intent of provoking readers into an emotional response[3] or of otherwise disrupting normal on-topic discussion.
I could easily see how that kind of comment would be considered something that was attempting to provoke an emotional response from Egossi.
I don't think people should be constantly warned... things like that are the reason there's trolls around still that will constantly troll and troll and troll up until the point where they get warned then kicked... then they will stop for a while and then troll some more expecting the warning/kicks to be required before they will get banned.
I also do not think that something like "it's not trolling, they are just naturally an asshole" is an adequate reason to get away with it.