RTFA.
Don't act like your opinion is the only one that matters. You may not, but other people do care about their privacy.
"Here's the thing: Google promises that under normal circumstances, Gemini cannot read or summarize your WhatsApp messages. But, and this is a big but, with the "help" of the Google Assistant or the Utilities app, it may view your messages (including images), read and respond to your WhatsApp notifications, and more."
Doesn't matter what your opinion is on privacy, google doesn't give you the option to opt out. - "regardless of whether your Gemini Apps Activity is on or off."