A lot of social-justice leftism is built on a very black-and-white concept of morality and beliefs: you either support their cause and shoving in a dozen tokens into every script without concern of actor's merit or threats to verisimilitude, or you are a genocidal racist that hates the very idea of nonwhites appearing in media. They will ignore all of history in favor of their narrative, and it only makes things worse from there.
Take Star Wars, for instance. After Moses Ingram was criticized for being a bad actor who felt tacked-on to fill a diversity quota, everyone acted like the problem was old Star Wars fans who were so racist that they couldn't stand the idea of a black person in their "Movie about Space Wizards," a line previously used to shout down people that didn't think that John Boyega was a good fit for a main protagonist. Of course, this ignored nearly four decades of fans being virtually colorblind in regards to the cast, to the point that James Earl Jones has become one of the most iconic voices in American Culture, Billy Dee Williams became a minor sex symbol, and Samuel L Jackson was considered one of the best things in the prequel trilogy. But no, none of that mattered, all because one black chick was criticized for being hostile to the fandom.
