Because it is goddamn hard for black actors to land any roles at all and not being able to play black characters is even worse?
This doesn't matter.
What matters is that the creators get to create the creative work that they wish to create. This is the voice they chose. Probably because it is the one they wanted. That should be the start and the end of this discussion.
Unless an email leaks out where Neil Druckmann says, "I really wanted to hire [insert name here], but it turns out she's black, so you know..." this is just another case of Neogaf being Neogaf.
Not everything is worth getting outraged about. Not everything is the smoking gun confirming secret racism.