If you are a secularist then odds are that you believe the "out of africa" and 100% of your genes are black even if you are White, so what difference does it make?
If you are a supposedly aware WN and you go onto a TV program, you are already compromised and you deserve to be called a nigger, so what difference does it make?
The way they interpret DNA, one may as well have his palm read, or tea leaves, what diffrence does it make?