I didn't miss that part, I just don't think that alone explains it. If they're just out to troll or destroy, they could write "1 trillion" and be done with it. Someone who takes upwards of five minutes writing nine after nine and giving themselves a hand cramp to do it
In summary, I think it's slightly more likely they're dumb and don't understand, than that they're jerks or desperate to "win" nothing. Not all of them, maybe, but an 80-20 split at least. Well, maybe 60-40.