Culturally appropriate voice acting contributes to a richer, more inclusive delivery of the story. When diverse cultures are represented with the respect and authenticity they deserve, overall the ability to deliver the story improves.
Also, avoiding harmful stereotypes when engaging in a story with BIPOC characters is important in celebrating the culture respectfully. Someone already mentioned earlier, the characters with "Jaja" in their names... That would have been a disaster had SE not gone the extra mile to actually include diverse voices in the playing of these characters.