In a godless world, x is only the case if one insists on using the infinite universe as a backdrop.
Yes, but Smith adequately defends infinite space-time and this is the dominate view of contemporary science. Interesting that you have to reject established science to buttress your faith, given that this is an accusation often lobbed at believers.
The only way you can avoid the same problem in the theist world is by basically drawing an X and saying "and here is where a miracle happened".
It is convienent to dismiss what I said that way, isn't it? However, I was speaking about properties of God. It is no more miraculous than salts tendency to dissolve in water is miraculous. I suppose you could dismiss an explanation for the Ocean's saltiness by salts tendency to dissolve into solution as appealing to an ad hoc "miracle," but I think that just indicates more about how you argue than the argument itself.
You still have not addressed why this argument has any significance in determining the reality of the world around us.
Since I did not say it did, even explicitly saying that was a fundamentally different question on more than one occasion, I'm going to go ahead and conclude this a rhetorical technique of last restort. Yes, whether your beliefs entail nihilism is a separate question from whether your beliefs are true unless, of course, we can show that nihilism is false.