>>149784913 (OP)Can't speak for whatever your OP image is, but I've noticed the shows with the highest chances of getting some kind of autistic fanbase the size of the moon are the shows that have some aspect of a "baseline thing" to branch content off of.
This can be as simple as locations that are mentioned (but unexplored by the main cast), to something more like MLP where anyone can shit out an OC by recoloring a pony or two due to the show's simple artstyle.
Sonic's got recolors and "Mobians", Steven Universe had a gazillion types of gems for people to make fan-content with, Pokemon's got a thousand Pokemon to impose personalities and hairstyles on.
Going with the assumption that your pic is something Homestuck related, that fits too since you've got both the trolls and the, uh, human character aspect things to build off of, whatever the fuck they're called (I liked Problem Sleuth, couldn't get into Homestuck.)
Since most "worst content imaginable" ends up half-baked, people have lots of room to do shit like make idealized OCs, "improved" canon fan-content, and so on.