Some goods news - "Identity politics is in retreat in Hollywood"(i.imgur.com)
Rose wasn't introduced for diversity.
She was written in because they originally wanted to do a love story between Rey and Finn but the actors had zero chemistry in the first sequel. They added the character of Rose so at least one of them had a love interest. The actress was then cast solely on how much chemistry she had with John Boyega, nothing else. They screen tested actresses of multiple races and nationalities. And they picked well, when I saw them on set I didn't know who she was and I literally thought she was his girlfriend he'd brought to set for the day. It's just they couldn't find anything relevant to do with Finn's character once they'd split him up from Rey.
