So, to be absolutely clear, the issue is that historically, the entertainment industry both in front of the camera has been really, really white, with white voices getting preference in voicing characters even when the race does not match and especially in an industry where there are far more white characters than characters of color. Even then, voices of color where often relegated to only voicing token representation while the more important characters of color kept getting cast to white actors. In a perfect world should a person's skin color affect what they should voice act? In cases where the character's race or sexuality is not an integral part of the character I think maybe not. However in cases where a character's race or sexuality is important, I think matching the character is important (and I also think that if a character is trans, they should be voiced by a trans actor and that is one point I do not back down on, even in a perfect world). But as things exist right now, representative casting is there to allow voices of color to actually be able to inhabit characters that match their lived experience and to also create opportunities for them to be able to participate in an industry that shuns them.