Genuine question, are there any black Japanese speaking voice actors?
Yes, of course there are! There are Japanese speaking voice actors of tons of difference races here in Japan.
It's acting. People acting other roles. This whole everyone can only voice people of their own race thing is ridiculous imo. A black woman just got cast as Anne Boleyn for a new show. I historically real white woman but no one is losing their shit over that. Get over it.
Okay, I think takes like this happen because we trot out words like equality. It's the wrong word to use. The word we need to focus on is EQUITY. This isn't about all people being seen as equal, because an unequal bias exists. This is about creating enacting circumstances that address inequity until a point where equality is possible.
Here is a nice cartoon to explain it.
In case my point is hidden after all that, here is my point: POC playing POCs in voice jobs is not because we think actors can't be chameleons. It's because it's a perfect opportunity to provide a position of equity to those of that race where none is ever provided otherwise. Then, once they've proven themselves in these roles, they can gain fame, and provide their voices in any number of roles and compete via talent. The issue is that so many POCs never GET the opportunity to compete via talent because of an invisible inequity that never allows them to do so.
I thought Yusuke was a black Samurai and, like any other Samurai, I thought he wore a Katana ... And this is what I like most and admired in his story (even with white people telling me that was just a fanfic): He was a Samurai like everyone else, just black. Soooo...
WHY IS HE FIGHTING PUNCHING LIKE A BOXER?
Well, this is just a function of the Musou series. Like Sengoku Basara, they give all the characters different weapons to make their movesets more varied. That's not just something they did to Yasuke.
(Also, Samurai didn't just use swords. Most used polearms, and many even favored fire arms.)