I see you have no answer yet, but perhaps folks are out West fighting the Indian wars on another thread.
Here is what I think.
Silence implies consent.
On the threads you mention, no one, not one freeper, defended DiLorenzo's claims about the two points you mentioned. So I assume them settled against him. Lincoln did not insert passionate Whiggish views into the debates or into the Peoria Speech, and Dilorenzo was, in public print, wrong.
Of course, better than silence would have been public admission by some of his friends, but silence will do.
Now we wait, with patience and goodwill, for similar results in the current dispute.
I am content with this.
Cheers,
Richard F.
Now just a minute ole hoss; please restate your contention explicitly in regard to what DiLorenzo said that you contend is false.