I had a bad feeling as soon as I heard about the "47 Ronin" movie; Jana Monji's review says that it's worse that I thought, that the producers didn't do the homework at all. (Warning: TV Tropes link. Possible serious time-suck.)
On "47 Ronin," Samurai Hair and Other Cultural Confusions | Far Flungers | Roger Ebert
The movie "47 Ronin" has a half-white character teaching the Japanese how to handle Japanese beasts and the true nature of bushidō. It fuses Japanese and Chinese culture with Western in a way that might be more digestible if this were food and not a movie.
The Variety article by Setoodeh and Foundas says that the film when it opened in Japan "needed support from the region, where the cast was well recognized. But it never gained traction there...Market research showed the key demographic of young men didn't buy enough tickets."
Why would young Japanese men buy tickets to this movie? The advertising for the movie clearly shows that the production team doesn't understand what makes a woman sexy in a kimono. (It's not the cleavage, it's the back of a woman's bare neck and the glimpse of her white foot.) The trailers depict the samurai without the hairstyle of their class. Should a tale about Japan seem more Japanese?
I've been to the gravesite of the 47 ronin in Tokyo. Even on a chilly and rainy spring day, people came to visit and make offerings. I don't fully understand it, but the myth is a cultural touchstone for Japan. I don't believe that "cultural appropriation" is a real thing, but this is a great example of Getting It Wrong.