I'm not aware that anyone's properly reverse-engineered it, but based on what I've heard anecdotally I suspect some of it is eliminated by not using a Microsoft

I'm not aware that anyone's properly reverse-engineered it, but based on what I've heard anecdotally I suspect some of it is eliminated by not using a Microsoft account, and some of it is eliminated by operating in certain regions or languages (perhaps due to not having a localized version of the campaign, or due to compliance concerns around advertising regulations and consumer protection laws in jurisdictions where that sort of thing is actually taken seriously).