The fact that those who said they wanted slavery eradicated in principle were slave-owners all their adult lives and died slave-owners, and never freed their own slaves, demonstrates that their position is the same b-s as yours.
So no slaves were freed, and no states passed laws banning slavery since the Constitution was ratified?
Slavery, as Stephens noted, was considered immoral by the Founders, even if they were not consistent in how they dealt with it.
That view changed with the CSA constitution.
Much of the problem with slavery came from those who did intend to keep their 'property' and resisted efforts by the Founders to remove it.
So, those who were resistent ending up leading the nation into war so they could keep their 'property'