From the first dev diary they said his mystery and the fact little is known about him is what made him a good protagonist they could weave a story around.
First dev diary:
It's clear from that interview that they were operating on the questionable view that he was a samurai to begin with. You can't exactly interpret calling him a samurai, and a historical character - while showing b-roll footage of him in full samurai regalia as they describe his life story - in any other way.
The mystery, to them, would be about the specifics of his exploits... as a samurai. Rather than the mystery of who he was full-stop. It's really just about having enough artistic license to have him high-fiving Oda Nobunaga in a cutscene after razing a peasant village.
Now, I don't have a problem with an interpretation of Yasuke as a samurai. It is common even in Japanese-made media like Nioh (as 'Obsidian Samurai'). But I think it was a mistake to frame his character in a way that was
at all historical, when they admit to knowing so little about him.
And they
do frame it as historical because this is written on Ubisoft's website right now:
In any case, Ubisoft themselves get only a little bit of my ire. The bulk of it goes towards the people who have turned it into a culture war flashpoint. Specifically, those who insist and ardently believe that he absolutely 100%
was a samurai, and if you don't agree with that narrative then you must be a racist.
It's fairly easy to just shrug all of this off and just play the damn game if it's good. But if we're basically being forced to rewrite history here because of some retards' agenda and to not appear as a bad person, that's something much more odious. It's the same scenario as the one Kingdom Come faced years ago but mirrored in a way: Assassin's Creed Shadows is ahistory being defended as history or else you're a bigot, while KC was history needing to be attacked as ahistorical or else you're a bigot.