Slavery Benefited . . . Slaves?

The state of Florida, under the direction of Governor Ron DeSantis - who somehow won re-election in a landslide last year - has just issued guidelines to teach in public schools that slavery had positive benefits for those who were enslaved, as they developed skills such as blacksmithing, carpentry, painting, and, for all I know, bellows-mending.

Unless you're talking about Nat Turner using the organizing skills he developed as a slave to lead a rebellion of slaves against their white masters, I don't see how that idea makes a ton of sense.

Even if the slaves did indeed learn skills, how many of them were able to put them to use for their own benefit one they were freed?  How many were actually freed?  I'm willing to bet that a majority of slaves who learned skills - and many if not most of them probably didn't, because their masters simply had them pick cotton or shine shoes - never lived long enough to gain freedom and employ their skills.

Let's get real.  The only people who benefited from slavery were white people.  Not just the Southern plantation owners but the Northern textile mill owners who bought all that cotton and employed low-paid white workers - "wage slaves," as John C. Calhoun called them - to turn the cotton into cloth.  But at least in the early nineteenth century, the white working class of the Northeast could pack up and venture west for land and opportunity.  Slaves didn't have that liberty, even if they were more skilled than the white textile workers in New York or Massachusetts.  

As for Ron DeSantis, he clearly lacks the necessary skills to be a successful politician . . . at least outside Florida.