Something funny about the world we live in today is that at this point we can see the actual consequences of various moral systems as they've played out for people. What people value and dismiss are on full display in every direction. Nothing can really stay fully hidden: people that hate any particular lifestyle will make sure to showcase the shortcomings of that way of living.

Warnings and fables are somewhat old news. The new way of conveying a moral to someone is going to be pointing a light onto some vicious (that's "vice" as an adjective) choice and asking "is this really how you want to end up?"