darquegk said: "They deleted the fact that Aurora is a Nazi propaganda actress to allow use of women of color in the role. It leads to more diverse casting, though it simplifies Molina’s character and politics now that he’s merely flamboyant and frivolous, instead of actively blinkered and apolitical. (A genderqueer individual loving Aurora then would be like a genderqueer individual making Harry Potter their whole personality post Rowlinggate today.)"
Not to take a side in this debate, but I think something to consider is that (in the book), the movies that Molina is recounting are real movies, and they're all American, with the exception of the Nazi one. The Nazi movie isn't actually a real movie, but a composite. So, all the actresses Molina is idolizing are explicitly white and (mostly) American. The musical seems to explicitly change this, by having Molina say that he "even loves the films Aurora made in Hollywood", implying she is not American and came to Hollywood later. The roles she is cast in (a Russian princess, a captive in the Amazon) seem to suggest someone who is white-passing enough to be a Hollywood star, but "exotic" enough to be cast in vaguely foreign roles.
I agree about the simplification of the character's ideology, although I think the movie goes too far in the other direction by having him only recount the Nazi film.
All this being said, I don't think they need to or even should stick to historical accuracy. Sure, Aurora realistically probably wouldn't have become a Hollywood star at that time if she looked like Ariana DeBose or Audra McDonald. But who cares?