I don't think anyone is arguing that evolution isn't a theory, only that it has loads more evidence which supports it, than this author has to negate it.
How do you explain the existence of modern birds, if there were no animals with feathers that flew, before archaeopteryx?
There were dinosaurs with feathers such as Velociraptor....
For that matter, how would you explain humans, when our fossils only go back so far? Where did we come from?