During his earthly ministry, Christ would never have thought of telling a sufferer to go see a shrink. He healed them. And, He's just as capable of doing that today as He was 2,000 years ago. Just ask Him.Christ also never told anyone to get MRIs, go into chemotherapy, have liver transplants, etc.
You cannot separate "mental health" from "physical health", unless you want to attempt to argue that the brain is not an organ of the body. Either all medical advances have been alloted to us by God, or we should all just pray whenever we get sick and forsake all of modern medicine. Which is it?
Calling sin mental illness and taking it out of the realm of repentance and the Savior's atonement is just what the Adversary wants. You even insist it's what God wants. Satan must love this.