If you have quantum interactions that appear random but which are determined according to the unseen variable principle, what is it that causes the unseen variables to act in such a manner that they cause an effect which simulates randomness? And I think we should also ask "why?" Real randomness is so much more Occam'srazorish.
Indeed.! Let us all zero in on that unseen variable. What motivates it, what powers it, what is it?? Circle that, because it is the joker in the deck.
It's a bit like the "free will" argument where it's suggested that we have no free will but we believe we do because not to do so would have some kind of terribly disastrous consequences on our ability to survive, presumably.
It's not half tortuous and artificial and all to deny something which in some people's infinite wisdom, shouldn't exist because they haven't worked out how it can exist. On that principle we should just give up and say that the universe doesn't exist. It's that daft and yet they are so intelligent and sure of themselves.