What if the turtle's universe was a dream thought up by the great flying spaghetti monster? My probability math is rusty, but it's my understanding that probab

What if the turtle's universe was a dream thought up by the great flying spaghetti monster? My probability math is rusty, but it's my understanding that probability is only relevant in a finite system. The article (in a very sneaky way) assumes, as it's premise, an infinite set of 'simulations'. But if this is the case, wouldn't that negate the usefulness of their 'probability'? In other words, if your conclusion is that we could be living in a simulation running inside a simulation running insi.....(keep going until blue in the face) doesn't that undercut your ability to say that one course of action is more likely than another? Or, even better, isn't this the same as the proof for god that goes: "Our world is so complex and the probability of it coming about by by accident is so small that there must be an intelligent being controlling it' (I was a CS/Philosophy double major in college, so my theoretical probability skills may be off, are there any math majors out there that can clear this up?)