You're missing the point. If someone doesn't want to use AI features, they can just NOT. USE. THEM. That's it. Just don't press the AI button. Is it that hard? Would you say Mozilla is deleting all your data because there's a "Delete cookies and history" button in the menu? You can just NOT. PRESS. THE. BUTTON.

The master AI switch doesn't actually change whether the browser uses AI features - it never does unless you specifically run them. What it does is hides them from the user, pretending they don't exist.

Browsers that don't respect their users' choices about using AI do things like automatically download large models in the background, integrate cloud-based speech recognition and synthesis as an API available to any website and make the default search engine which they also own show LLM slop above actual results.