The point the poster meant to make, as I understood it, was that the dependent underclass that is now ruining our country is a direct outgrowth of slavery.
It’s a thought that merits consideration, not condemnation, even if you disagree.
Why should a thought merit consideration when it is without merit?
The dependent underclass is not a direct outgrowth of slavery, it is a direct outgrowth of communism/socialism using racism as a tool. If it was a direct outgrowth of slavery then this social condition would have been continuous since the civil war. It just started in the 1960s with socialist entitlements and went to hell from there.