I'm not saying how it should be fixed or even that needs to be, that's a whole nother ball of wax. But race clearly matters in society, for better or worse. And the UFC isn't some island that is divorced from that. Hell, you can even lean into these expectations for more promotional juice. But race clearly matters in combat sports, just like it does in life. Saying it doesn't doesn't magically handwave that away.
Since you seem to have been a fan for a while, consider the Rampage/Rashad fight. It's one of the UFC's best selling PPVs from that era, especially when you consider it wasn't a Conor or Brock selling. The biggest line people remember from it is Rampage leaning into the stereotype of a dumb ghetto black dude and saying how people would get to see some Black on Black crime. And then Rashad calling him out for pretending to be a dumb black guy. If you can't see the racial undertones in that, I don't know what to tell ya.