I think its ironic that the capital of texas, Austin, named after this dude, is literally a brown horde run shit hole that is violating the blonde daughters of texas
Anyway, Stephen seems to be giving a wide margin with his predictions, 50-200 years.
But technically he is right if off by a little. He predicted this in 1831, after the Nat Turner revolt, and 30-ish years later the civil war happened, and now we are nearly at the 200 year mark, and america is kinda goin' down hill soon.
Unfortunately, Stephen is a hypocrite because he himself was a slave owner, so he helped the orcs come here. Also he sadly never named the jew.