Yeah, I agree. This is my problem with historical dramas where all the “good” characters are okay with someone being gay, too. That’s not how history was, and it feels offensive to marginalized people to just paint over their history like that. (I’m not a person of color either, but I’m bisexual and I’ve studied a lot of gay and bi history since the early 2000s.)
My complex thoughts on colorblind casting:
It works better in theater than on film, because theater is inherently less realistic.
Historical figures should be played by actors who more or less resemble them. Ethnicity or nationality doesn’t bother me so much - for example, the late Selena was Mexican-American and Jennifer Lopez is Puerto Rican, but Jennifer Lopez was right for the part because she bore some resemblance to Selena and can sing.
Fictional historical characters can be minority ethnicities if that can be done plausibly. Someone mentioned a stage version of “The Lion, the Witch and the Wardrobe” where the Pevensies were black. That, to me, seems plausible, because there would have been black families in London in WWII who could have evacuated their children. (Please correct me if I’m wrong.)
However, I do think that in some cases, Hollywood adapts fiction or remakes movies and makes white characters non-white because they’re too lazy to make anything new for people of color. For example, I would have rather seen Disney use their time, money and talent to make a new black princess voiced by Halle Bailey than to put Halle Bailey in the live-action Little Mermaid movie.
Parents and children can be played by members of different races, if it doesn’t significantly alter the story for the audience to assume that the children are adopted.