I’ve actually seen plenty of arguments that white girl + black guy romances are still shockingly uncommon in Hollywood films; the reverse is more accepted, as are any combination of minorities, but even extremely popular black actors tend to find their romantic interests are either non-white actresses or subtle and stilted enough to arguably not qualify as actual romances. There’s an argument that unless challenging racism is major goal of the production, Hollywood generally falls back on still trying to make sure that white women end up with white guys.
There’s a Cracked After Hours video that makes that’s argument using Will Smith and Denzel Washington from the heights of their careers:
https://youtu.be/ftm5r_bFIU8
But for a more specific argument, here’s the real issue with the way the Sequel Trilogy handled Finn, Rey, Rose, and Kylo - the interplay between those characters, especially in TLJ became about
demoting Finn in favor of Kylo as a male lead, and part fo that was in making sure that Kylo would be the romantic male lead, while consigning Finn to a Token Minority Couple with Rose.
Honestly, the biggest issue with Rose in story is that she seems like a blatant overreaction caused by a panic attack for LFL and Rian Johnson at having Rey focused on Finn instead of Kylo - that whether the relationship was platonic or not, and whether LFL was racist or just simply over-invested in the Adam Driver, their biggest goal for Finn in TLJ was getting him away from Rey and putting Kylo in his spot.
Rose is a waste of Kelly Marie Tran’s clear skills, charisma, and chemistry with Boyega... and likely because Johnson didn’t care about her or Finn as characters, but in pulling Finn away from Rey and the spotlight; he himself has voiced apathy he had towards his story ideas for them, and I’d say Boyega’s ire towards TLJ is because of how clearly in hindsight you can see TLJ wanted to neuter his character’s place in the story. Rose’s problem as a character is that she’s designed to drag Finn down to supporting character level with her - I wouldn’t doubt her lack of interesting character traits or accomplishments is a deliberate attempt to use Fonn’s relationship with her to drag him down. Jannah in TROS is more clearly designed to try and elevate Finn’s story... but Boyega and others have heavily suggested LFL stepped in and tried to cancel any ambition Abrams had for the character in TROS.
...And to be blunt, it’s hard to avoid the feeling that TLJ
especially is trying to argue Rey is better off being abused and further denigrated by the Neo-Nazi School Shooter who tried to Mind Rape her than she is exchanging dialogue with her black best friend, and TROS suffered more from pretending TLJ did something positive with that than it did from introducing Jannah and relegating Rose to a minor role.