They're retarded nerds. They like to abscond from reality into their fantasy realms and power fantasies because their real life people skills suck. This crosses over into message boards as naturally only an idiot loser would bother to moderate this shit beyond the bare minimum and they lack any kind of ability to deal with seeing things they don't like. Which is naturally hilarious and simply attracts the trolls.

It's the age old advice long since forgotten, don't feed the trolls, and if someone does feed the trolls laugh at both of them for being retarded. You start going off about flat earth shit and it is clear it gets under your skin the trolls are just gonna find that hilarious and taunt you with it. And frankly, it's pretty pathetic and hilarious for an adult to think they need to crusade against such an abjectly stupid idea instead of just sitting back and laugh at watching the flat earthers torpedo themselves with bad science.