I agree, the word troll isn't that helpful here. But I think it deserves to survive in the phrase 'don't feed the trolls' since that is the wisest thing the internet ever said. It would be interesting to know the origin, actually—I wonder if anyone has traced it.
FWIW, I asked about this here: https://news.ycombinator.com/item?id=29778358
There’s a link in the comments to this 2005 verion of the net.abuse FAQ, which references “Do not feed the trolls”: http://www.faqs.org/faqs/net-abuse-faq/troll-faq/ reply
Not sure if they are pure trolls though. You can sometimes hear the same discourse IRL. I can’t stand them.