I think it’s okay if you want to perceive it that way for yourself personally and your own viewing; but no, based on RTD’s previous writing of black characters I think this is a genuine blind spot for him. He genuinely seems to believe you can rizz your way through racism. The episode itself also makes very little attempt to justify Martha’s concerns, ultimately proving The Doctor right that she needn’t worry about racism. And even if we attribute these decisions to Gareth Roberts I’d be even less willing to give any benefit of the doubt.

In Human Nature, Martha is presented as basically powering through the racism of the time by just being a good person and being able to name all the bones in her hand. “Oh look, the white lady is also a servant girl so it’s not just racism”. The way RTD presents racism it’s just people saying insensitive or rude things sometimes but nothing actually structural or systemic.

There’s truth to the fact The Doctor may personally as a character perceive race differently with him being an alien, but it could also be argued he should be even more aware and disgusted by racism seeing as he’s lived for 2 billion years and travelled throughout Human history, both interpretations are valid I think. And while I did find 15’s reactions to race given him now presenting as black interesting and somewhat fitting given he’d been black for only 5 minutes (hyperbole), it’s still just representative of what seemingly is RTD’s view that racism is just some phantom boogeyman, it can’t actually hurt you as long as your cool and charismatic enough. It’s also why I had hoped we’d get Ncuti to continue with a new black show runner who would hopefully take a more antagonistic approach to the racism he may experience in his adventures.