Wilkepedia definition of an Internet Troll
"....Internet troll
In Internet slang, a troll is a person who sows discord on the Internet by starting arguments or upsetting people, by posting inflammatory, extraneous, or off-topic messages in an online community (such as a newsgroup, forum, chat room, or blog) with the intent of provoking readers into an emotional response or of otherwise disrupting normal, on-topic discussion, often for the troll's amusement.."
As previously commented on, don't feed the troll.
Time for the moderators to step in and
(1) simply lock down this crap thread and similar crap ones. If they do not, it's identification by association - full stop.
(2) Trolls hide behind that central plank of cowardly anonymity provided by forum monikers and a laissez-fair administration by the moderators above. Trolling can be addressed by an initial stern cease and desist warning by the website moderators for subject matter thst fits the internet troll definition above, a second trolling occurrence creates a six-month forum ban for the troll , and a third strike in trolling is a lifetime ban.