Right, it is hard for creationists to focus on populations instead of individuals. Thinking in terms of populations requires more complex thought and ruins the ideas of creationism.
That is why I try to explain alleles to creationists. The largest "proof" that evolution is happening is the number of alleles in loci in various species. For instance, if Adam and Eve were the first creation of humans and humans don't evolve, there could only be a total of 4 alleles at any one loci. At some loci there are many more than that.
Creationism is debunked by this one fact.
Actually, since Eve supposedly came from cloning, there could only be two alleles, but I was being generous.
I still hear references to the great bottleneck 70,000 years ago.