The universe existing as a byproduct of God?

[T.J.]

Okay, I'm going to try to explain this as best I can as it's a new argument I've seen cropped up and I kind of like it if only for the fact it involved thinking outside the box for a change.

Basically, while talking about the 'Perfect God' conundrum, one proposed the idea that God didn't purposely create the known universe, but its existence simply allows it to be created and exist by being, and since it does not need or want it has no reason to end existence due to its omnibenevolent nature.

In short? God accidentally the universe!

Now the problem lies in the fact this is still working on the basis of God being omniscient, omnipresent, and omnibenevolent, and since I literally just got out of a conversation where it was explained to me how contradictory/impossible objects cannot exist, if it's then suggested that the universe exists due to God's existence, then the universe cannot exist because this god cannot exist, and the mere fact that our universe does exist proves that said god does not exist.

So... checkmate?

Anyone ever seen this argument proposed before? I don't know if it was ever brought up here or not.