I've heard a few different people argue that all of them are really just pride/greed. Lust, Gluttony, Envy, Sloth are just Greed in different "areas" of life. Wrath and Pride are more similar, but could be seen as either Greed itself, or as a reaction to greed. Like, wrath as a protective reaction to one's greed, and pride as a reaction once greed has been achieved.
I think one of them even suggested its all pride, as Christianity largely sees pride as the #1 sin. To me it makes sense, because a medieval peasant could run this show better then god at this point. If the poors think they're better then the dumbass running the show, they might do something. Make even the thought of replacing god a crime and you got a self controlling populace.
The real conspiracy "theory": the US gov pushed 911 truthers to delegitimate any narrative except the official one.
("Theory" because this basically has to be true at this point. Also see the push to platform cranks like flat earthers and associate them with "conspiracy theory".)