Assassin's creed is purely fictional and has very little basis in reality, so no, people do not make the exact same argument about Assassin's creed, because my argument necessarily excludes it as I have said already lol. Besides, Yaskue was a real person. It's not even historically inaccurate and his origin is explained.

Good example, in Castlevania Nocturne they introduce a bunch of multi-ethnic characters and give them all backstories as to how they ended up in 19th century France. I think that's awesome, and I love to see the thought and effort being put in there. I don't want these characters to be white, I want them to have a story.