I agree with your argument and have thought about that 'explainatism' as well. In my oppinion it is used by those that are incapable of accepting substantially different worldviews to their own. Trump was prepping up his followea for the loser narrative too with the 'the elections are rigged' argument. Attributing it to some sort of cheating narrative allows the follwers to continue belive that they are doing the right thing and that the other side is just a bunch of manipulated fools that need enlightenment.