My opponent's settings-page disclosure sounds clean, but it still sells a choice that mostly doesn't exist. If the opt-out means losing the service, it's not control; it's a toll booth. And "data that trains an AI" is blurrier than it sounds: most data is collected, filtered, and used in aggregate, so a notice can only say "may be used," which is exactly the vague clause people ignore. Public audit summaries and data-minimization rules beat a settings toggle. Tell everyone what categories are used, publish the audits, and give regulators teeth for objections. That's knowledge without theater.