I have not read this entire thread so I'm not sure what you are talking about. I'm certainly not a Calvinist.
The Calvinist John Gill makes this case and has been stated here many times.....
neither indeed can be; without regenerating grace, without the power and Spirit of God, unless it is written upon the heart by the finger of God; for carnal men are dead in sin, and so without strength to obey the law; and besides, the carnal mind, and the law of God, are directly contrary one to another. Where is man's power and free will? no wonder the carnal mind do not stoop to the Gospel of Christ, when it is not, and cannot be subject to the law of God…
All of this is based on presumptions about the nature of fallen man (will, spirit) as making man incapable of responding affirmatively responding to God's Gospel appeal and call.