Yeah that and

into an authentic Japanese character

are both pretty fucked up

What in the fuck is authentic about turning a black guy asian?

Whatever site that is really knows their audience. Not only is Yasuke, famously a real human being who actually lived and was black, “originally depicted as a black man”, the mod also apparently turns him into an “authentic Japanese character”. Which is apparently a more fitting description for whatever generic Japanese dude the modders think up than an actual historical figure. Christ.