I wish that were the case. Anti-troll implies that when the troll & anti-troll meet the would cancel each other out & cease to exist to the advantage of all reasonable people.

Alas... It seems that trolls mearely traumatise others who then also fall into trolldom.
Trolling is lose/lose as far as I can tell at this point.

It is the realm of the damaged & mentally ill, of that there should be no doubt.