Yes, this is a fairly silly thing that some people say and it's predicated upon a profound ignorance of evolution and simple biology. Some believers in gods have a problem accepting the fact of evolution because they mistakenly believe it adversely impacts their faith. Science concerns itself with testable claims, however, and as such gods and goddesses, warewolves and vampires just don't factor into science. They should be comfortable with their faith, you see, rather than try to attack science due to their inability to understand science.
Most theists accept the findings of science.
It's an attempt to try to pretend that evolution is a religion and that Darwin was some kind of god to those who accepted his observations. As far as disproving evolution, that's kind of difficult since evolution is a directly observed phenomena. One would have to discount entirely the change in allele frequency in a population over time which is observed in species in the span of human lives. One major step toward disproving evolution would be to find fossils in the earth's strata which are out of sequence in its geological collumn. Evolution is both a fact and a number of closely-related theories.