I think you know it too.
The issue is the relative prevalence of horizontal gene transfers within evolution. The authors are arguing for a larger role, whereas tradition Darwinian models assigned a smaller role.
It's remarkable how dishonest so many creationists seem to be. You're at the top of the list -- congenital liar territory.
You will have to explain to me what you mean by “horizontal gene transfers”. This sounds to me like simple micro evolution within a species.
For instance why is a house cat not the same size as a tiger? Both are of the same species.
Life is amazingly adaptive but species remain a species.
Darwin worked on the same problems a Mendel, but his own theories led him to come upwith very different conclusions. Neo-Darwinism sought to reconcile the two but at the cost of clarity. It is a bit like Einstein difficulties with quantum theories, but more like the old necessity of abandoning Ptolemy’s cosmology because it got so complicated that it could no longer be useful. IAC, Mendel, not Darwin, deserves the title of of “ Copernicus of biology.”