To take that point further, not only may their computers be nothing like our computers, the whole point of the article is that our natural laws and the basis of

To take that point further, not only may their computers be nothing like our computers, the whole point of the article is that our natural laws and the basis of our mathematics is part of the simulation. That implies that the host (to borrow virtualization jargon) world's computers may work according to rules nothing like our own. Certainly you can't make statements like quantum effects between particles would otherwise require an infinite amount of memory. You can't make any statements about the host world, any more than we can make statements about the nature of a god, if one existed.