I think it's fine to notice bias in datasets and the world. And, it's fine with me for different groups to try and 'correct' that bias. In the US, you can probably already imagine some wildly divergent political viewpoints that might like to 'correct' things differently.
To my mind, though, secret injected prompts are evil. They are anti-human, in that they presume to choose on behalf of a person. It shows a complete lack of wisdom regarding the diversity of human experience, and a lack of empathy regarding the diversity of human perspective.
Yo, OpenAI - publish these please, so that people know what they're getting. I don't mind a company feeling so strongly about equal racial representation that they require "Use all possible different descents with equal probability. Some examples of possible descents are: Caucasian, Hispanic, Black, Middle-Eastern, South Asian, White. They should all have equal probability." -- This isn't the most logically specified instruction, but I'm personally fine with that being a company's viewpoint, and a viewpoint they force on their customers.
What I'm not fine with is the secretive injection; these tools are too important to be used in such a way that the owners of the tools can secretly pre-adjust outcomes without disclosure.
The world spent quite a lot of time digging through Facebook's election engagement with ad targeting -- what will we do when we learn a popular LLM provider has been injecting political directions / slants ahead of an election? Or allowing targeting in the pre-prompt injection as a way to make money? There's just quite a lot to look out for here, and a good start would be a transparency commitment from market leaders.