People can’t physically live together without morality.
There are many potential sources for morality, or humanity. Being nice because of heaven and heck’s carrot and stick approach isn’t necessarily the best guide to moral behaviour. But most of all it’s just a ridiculous assertion to claim morality proves the existence of supernatural being. The argument is not going to sway anybody towards (or away from) believing in the wholly goat, it’s internet preachers method of getting pats on the back from their congregation who already fully believe.
