You know all those stories about EVE online players destroying millions of dollars over fake wars? Will is sort of based on that phenomenon. Players who turn to multiplayer games to gain a sense of power and accomplishment that they can't get irl for whatever reason. Usually these types are manipulative and toxic, but Will is genuinely dumb and just wants validation from others. (although the right way to classify him in the DnD sense would be rock-bottom wisdom, high intelligence). He's a loon who's been self-trained to be normal, but now has an outlet for his buffoonery, if that makes sense.

EDIT: also that last bit about lying was a higurashi reference ohoho