Earlier quoted context omitted.
Where does it say that it won't be white-labeled? Yes, Apple is acknowledging that Google's Gemini will be powering Siri and that is a big deal, but are they going to be acknowledging it in the product or is this just an acknowledgment to investors? Apple doesn't hide where many of their components come from, but that doesn't mean that those brands are credited in the product. There's no "fab by TSMC" or "camera sens…
Apple won't take the risk of being blamed for AI answers being incorrect. They will attribute Google/Gemini so users know how to be mad at if it doesn't work as expected.
They will do everything possible to avoid that and so re-brand is the only likely outcome.