If one were interested in salvaging the correspondence, one could argue that there's a chain of simulators-simulating-simulators and it's that chain (which extends down to "reality's basement") that theists label as a deity.

That said, I see no point in allowing ontology to get out ahead of epistemology in this area. Sure, maybe all this stuff is going on. Maybe it isn't. Unless these conjectures actually cash out somehow in terms of different expectations about observable phenomena, there seems little point to talking about them.