Such a damning argument. Yes, one could tell the SS officer he isn't really a Jew because his father, not his mother was Jewish. It's the torah were talking about here, G-d's law. You think that SS officer is going to give a [censored]?
It's not just "haters," most other people are not aware about the maternal bit, so for most people, having 1 Jewish parent, mother or father, that person considers the other a Jew.
Consider also the Torah was written over 5000 years ago. Do you belive the world was created in 7 days as the torah says, or that the world is much older given advances in science? Modern man did not descened from Adam and Eve as the Torah states, mitochondral DNA has traced all humans to a common ancestral mother living in Africa some 250,000 years ago.
The Torah is an awesome work, I love seeng one opened, such a beautiful thing. But modern science is also a beautiful thing, and so is adapting thought to modern times.