1 - is almost true: all rational thought presupposes identity (A=A, that things must be themselves), NOT idealist, mystical “laws of logic.”
2 - is a loaded premise, as it uses the term “necessary ground,” which must be defined. (And when the theist does define it, he attempts to smuggle in supernaturalism). It is important to note that he uses philosophy (not Reason) to accomplish this smuggling. I point this out to the shame of philosophy.
3 - Is doubly loaded with the terms “God” and “necessary ground.” What, exactly, does one mean by God, and how do they know that it exists? This enormous burden of proof, attached to the specificity of God, destroys the entire attempt to even construct such an argument.
4 - Yes, it is true that Atheism cannot “ground logic” because Atheism is largely a lack of belief in God. Perhaps this theist meant to say, “naturalism cannot ground logic.” (We must first point out that theism doesn’t “ground logic” simply because it claims that it is grounded in a specific concept of God). This mere assertion is not an act of “grounding,” it is not a proof of the ground of logic, it is simply a theological claim. So what exactly does it mean to “ground logic?” It cannot mean to make a theological or philosophical assertion. One either needs evidence or a deductive proof. As I have exemplified many times through evidence and rational proof: Logic is a fact of the universe. Contrary to philosophy, it is not something we merely construct. A theist can attempt to argue that the universe has this fact “because of their God,” but this is an impossible burden of proof, because we can’t examine a God or Gods, we can only examine the universe. (And) it is an impossible burden of proof because God is the most problematic loaded term in all of existence.
5 - There is an argument to be made for absurdity. Here philosophy has left naturalism in a very impoverished state indeed. If one rejects Logic, or holds that it’s merely “a human construct,” then their position does indeed collapse into absurdity. Further, one can push an argument like the one the theist is pushing here. (Very important): the theist must meet the same burden of proof he is demanding of his opponent, and merely saying, “well, logic is grounded in my worldview because I believe it is grounded in my concept of God” — doesn’t actually ground Logic! However, philosophy f;cked naturalism, because it did reduce the world to a clash or arbitrary worldviews. And because of this, the theist can contrast his worldview (not because it’s true) but because philosophy’s methodological irrationalism did reduce Reason to absurdity, to subjective preference and might makes right. Without Logical Realism everything collapses into nihilism. And Reason is well within its rights to inquire into the ground of this realism. Indeed, it would seem necessary to the consistency of Reason itself.
6 - There is indeed an argument here, but the problem with it is that the theist hasn’t “grounded” or explained Logic simply by saying, “my God did it.” So he is in the exact same bind. Within a narrative (make-believe context, which is what philosophy reduces truth to) the theist can make this claim. It doesn’t make it true, but philosophy destroys all truth, so the theist can make this claim.
7 - Ridiculous non-sequitur. (The conclusion doesn’t follow from the premise). It also smuggles in the concept of “the impossibility of of the contrary,” and a concept of God. This argument can be made for Logic, but a theist would be very hard pressed indeed to soundly make it for his concept of God. He wouldn’t even make it past the first stage of defining and then justifying his definition.