1.) The right side of history and the winning side of history do not always intersect.
2.) It was not claimed White people are the only ones who ghost from debates. You’re making a straw man.
To help you out a little in your own discussions (assuming You’re referring to discussions of race), ghosting by non-Whites usually happens when White folks come in demanding explanations of basic facts they could research on their own time; like someone walking into a discussion about advanced calculus and demanding that everyone first pause to prove (to them) that pi and e are irrational.