Its not too far fetched, he is likely exaggerating it but polls have shown black men are way more receptive to trump than women and trump has seen slight increase in polling in that regards as well. Alot of this black folks dont give a damn about the collective as long as they got theirs its screw the rest of the community, if not that i see no sane reason a black person would support the republicans with their white supremacy pro white, pro corporate agenda