Nonsense. Look at the quote in whole:
"You see," said he, "we had reached and were discussing the slavery question. Mr. Hunter said, substantially, that the slaves, always accustomed to an overseer, and to work upon compulsion, suddenly freed, as they would be if the South should consent to peace on the basis of the 'Emancipation Proclamation,' would precipitate not only themselves, but the entire Southern society, into irremediable ruin. No work would be done, nothing would be cultivated, and both blacks and whites would starve!"
Said the President: "I waited for Seward to answer that argument, but as he was silent, I at length said: 'Mr. Hunter, you ought to know a great deal better about this argument than I, for you have always lived under the slave system. I can only say, in reply to your statement of the case, that it reminds me of a man out in Illinois, by the name of Case, who undertook, a few years ago, to raise a very large herd of hogs. It was a great trouble to feed them, and how to get around this was a puzzle to him. At length he hit on the plan of planting an immense field of potatoes, and, when they were sufficiently grown, he turned the whole herd into the field, and let them have full swing, thus saving not only the labor of feeding the hogs, but also that of digging the potatoes. Charmed with his sagacity, he stood one day leaning against the fence, counting his hogs, when a neighbor came along.
"'Well, well,' said he, 'Mr. Case, this is all very fine. Your hogs are doing very well just now, but you know out here in Illinois the frost comes early, and the ground freezes for a foot deep. Then what you going to do?'
"This was a view of the matter which Mr. Case had not taken into account. Butchering time for hogs was 'way on in December or January! He scratched his head, and at length stammered: 'Well, it may come pretty hard on their snouts, but I don't see but that it will be "root, hog, or die."'" Link
Lincoln wasn't referring to what the slaves should do, but what the planters should do. It was the planters who were faced with the need to work for a living. Without slaves to do the work then it was the rich white southern aristocracy who would have to 'root hog, or die'.
"Root, hog, or die" ….
Lincoln's suggestion to illiterate and property less ex-slaves unprepared for freedom, (Feb. 3, 1865).
I don't know if this is true or not. I suspect not.
But if anyone in this country was ever left to 'root hog or die', it was Lincoln himself.
Walt