Remember now: the narrator seems to have depicted God as suddenly going dormant here.
But was He really?
Didn't God bless Noah and his family with some kind of fertility blessing?
Genesis 9:1 And God blessed Noah and his sons, and said unto them, Be fruitful, and multiply, and replenish the earth.
And if you think God hasn't handled genetic variability in the past ... think again.
Genesis 30:39 And the flocks conceived before the rods, and brought forth cattle ringstraked, speckled, and spotted.
All this video was created to do was one thing: mock God.