Maybe. Or maybe the fanbase knew where to draw the line between fantasy and history before, and now can't fathom that a work of fiction that uses Trancers style time travel and featured several historical figures in the past performing actions that there was no historical record that they had performed might feature a historical figure portrayed in a way isn't 100% historically accurate.
None of the AC games are historically accurate. The COD games that were set in the past.... Not historically accurate. Wolf3D? Nope, not historically accurate. Hogwart's Legacy? Nah, not accurate. We used to be able to play a game and just have fun, and now we are relegated to debating the historical accuracy of games and RPS motivations of the developers, writers, and publishers. This isn't a game problem, it's a problem with how we must make everything into an action that's pro or anti something.
All of the complaints? All of the Japanese? That's a generalized statement that I can promise you the answer is a no to both of those. Yasuke is a a playable character in the Samurai Warriors games, an action game set in the Sengoku period and featuring several people from Japan's history,
where he's referred to as a Samurai, in a game made by a Japanese developer and published by a Japanese publisher. Is that historically accurate? Who cares, the game is fun.
Quote from the Koei Tecmo website regarding Yasuke