I have a big one cooking regarding AC: Shadows vs Rise of the Ronin vs Ghost of Tsushima vs Nioh vs Sekiro but ultimately:
Having played all except Sekiro to varying levels of completion I can tell you that almost all of the people who are mad about Shadows are just being racist. It's literally standard fare Assassin's Creed historical fantasy.
It does strike me as funny when people recommend playing Nioh instead for historical accuracy- yeah, the game where the white guy travels across Japan killing yokai? I'll grant you that the white guy existed but it's interesting that yokai are apparently easier to suspend disbelief than the black guy who also existed and who also appears in that game, albeit as an enemy. So you can believe fighting him but not playing as him, I understand.
It also strikes me as interesting that people point to playing Rise of the Ronin as more historically accurate (it's not) and that it doesn't have "any DEI nonsense" (you can be black in RotR if you choose to, there's even preset black settings in the character creator) (you can be gay in RotR if you want - and some people in Japan have jokingly called it a BL game as a result because the men are quite pretty) (you encounter several people with mental and physical disabilities in RotR which tracks for a time of upheaval in which people are killing each other with sharp metal objects and also guns) (also South Korea was BIG MAD about RotR for a very long time because it's at least somewhat Japanese imperial propaganda so if you're looking for racially sensitive don't look here not that these guys actually care about racial sensitivity) - at some point I start wondering if the people making these suggestions have actually played these games or if they've just read a wikipedia synopsis of the plot and not looked further into it.
GoT isn't even that historically accurate considering Japan lost Tsushima island to the invasion for some time and the army was, in fact, not chased off by a single samurai going off script and defying everything he knew about the bushido. It was an amazingly fun and breathtakingly beautiful game, but fiction it most definitely was.
It's also so weird to me that people are A: so upset about Yasuke having the option of a nonbinary and a gay romance (sexual relationships between men are well documented in historical Japan especially among samurai and nobility) and B: not mentioning that Naoe also can have a gay romance (is it because watching two Japanese women kiss is hot to these guys but not the black guy with the Japanese guy? hmmmmmm). Assassin's Creed has been allowing gay romance options since they started having romance options, and in fact it is historically accurate as these cultures (Roman, Norse, Japanese) did not have the same level of homophobia as we see today. I also am recalling stray conversations with Ezio in fucking Italy and Constantinople where he effectively shrugged and went "that's your own business" when encountering a gay relationship so it's not even that new to Assassin's Creed.
It's literally just very very poorly concealed bigotry. That's all it is.