The parent comment has a point. A layperson (or at least many people not read into this topic) isn't going to read the language in that privacy policy and come to the conclusion that "any private web page you ask Gemini about will be dumped into our training data". The text on Google's privacy page could absolutely be made more explicit.
I'm sceptical a layperson will understand or care what it means that their data will be used in training. If you are concerned about such things this heavily implies you don't want to share your data. Just don't agree to the terms and move on.
It really isn't. It's destructive and short sighted behavior based on incoherent dogmatism over any motivations for thoughtful and more restrained policy decision making. His motivations for any action is based on flattery and ego that stretch the boundaries of multiple universes. It's so crazy how much blatantly unconstitutional stuff he's gotten away with.
With how much worse the experience of using Windows has gotten, why wait? Many hills have already come and gone. This is the hill you're willing to die on?