i think you're asking me this because black characters from those games, like franklin and cj, used the word frequently in their dialog, but my point that you fail to see is......those games were headed by whites who couldn't care any less about showcasing conscious brothas or sistas in their games. those games are strictly about violence and running amok in.
with tariq priding himself on being a conscious black man promoting black empowerment, i doubt he would make a game similar to a mind numbing modern day gta game. seeing as though his game isn't based in current times, where i'm pretty sure brothas weren't calling each other nikka, so it should be pretty interesting to see the research done (if any) with the vernacular used by the characters in game.
...but to answer your question, yes.