Well then that's not "turtles all the way down", it's just turtles 2 levels down. Second, the simulation argument is about our own universe someday making simu

Well then that's not "turtles all the way down", it's just turtles 2 levels down. Second, the simulation argument is about our own universe someday making simulated realities. Assuming we are being simulated by a radically different universe is entirely different.