Yes, I know what 'hybrid vigor' is. But mating with low IQ, violent nigger apes detracts from your offspring, not adds to it. What Whites get from hybridizing with niggers is just Hypogamy.
Around the 3:00 minute mark he admits that mixing race with african apes produces offspring with greater propensity for violence and mental instability. This poor truthtelling guy would get oceans of hate mail if he had a huge audience on youtube.