To deal with the argument presented in the video you will need to show the error in their math or detailed explanations why it does not apply to genetic variability. Go for it, but stay on track.
His math-based argument is grounded on a false premise, i.e., the apparently sudden appearance of a gigantic zoology of completely new species in a geologically short period of time. This isn't, in fact, what evolutionists propose about the Cambrian Explosion. They propose that this enormous number of species suddenly (in terms of geologic time scales)
appeared in the fossil record, not that they popped into existence in a geologically short period of time. What actually occurred was that all those species categories suddenly (from a geological time scale perspective) took on characteristics that made fossilization possible, i.e., hard (mineralized) body parts as an adaptive response to the first appearance of predators possessed of jaws.
If the premise is defective, which theirs clearly is, all conclusions based on it are presumed faulty, no matter how rigorous the math.
