You are, of course correct.
And not a moralistic, therapeutic deism but the true Gospel!
Agnostic humanism has lead to evil going unchecked and the erosion of morality. Human view of right and wrong, good and evil, is not God’s view. We need to follow God’s truth, revealed in His word and thru the saints and our Lord Jesus Christ.
Whatever that is.
One can find numerous, mutually contradictory opinions on that topic expressed even on this forum, all supported by Scripture. Logic dictates that they cannot all be right (but they could all be wrong).
As a nation, we'd be far better off if we spent our time respectfully discussing that topic instead of making excuses for buggery, abortion, and theft.