First, 100% a red flag. Even if they wanted to give some sort of "I trust you with my life" sort of video, there's a bunch of better ways to do it. Going for a racist rant makes me think that they're a racist.
Secondly, this is deeply submissive - they're giving you the power to ruin their life. If you want to do that sort of stuff as a couple you should really talk about it first and be on board with receiving that sort of power and responsibility. Entirely possible+reasonable for the receiver to find this shitty because they don't want to make a choice like this, especially if these are truly held beliefs.
The healthy response to this is to send them to a therapist. And definitely dump them if they're actually racist.
I can (and have, many times) dropped a hard-r for comedic effect, even around my black friends, as they have the context to know that I'm not actually the kind of person to use that word normally
If I was recorded and shared to the internet doing so free of context, I would be labelled as a racist shithead immediately and forever
That's how I read it, yes. But we obviously don't have enough context to say whether the GF is actually racist or just pretending to be as a crazy trust exercise. I'm taking it as a crazy trust exercise because that's the only way this could fit any definition of "romantic."
I think taking any random problem and putting blame on a group of people would be racist. I could spruce it up with the term “nipper” or “kike” and most people would find it racist
I suppose you just don’t find anything racist if you can’t come up with it