I agree that religions have contributed to morality, but that's a weaker claim than the one at issue. How would someone argue for God's existence on the assumption only that religion has had a larger impact on morality than has secularism (because most societies have been religious)? You would need KT's stronger claim that real morality can be established only on religious grounds.

You think secular morality consists of "vacuous cliches"? How are theistic statements, such as appeals to miracles, more substantive?