“Google has added an exception to its promise that your emails and photos won’t be used to personalize ads.”
Google promised your inbox was off limits to advertisers. Then it built an AI that reads your inbox, and the AI’s “inferences” are fair game. Ads aren’t based “directly” on your email. They’re based on a summary of your email, which is the same thing with one more step. Personal Intelligence was never a feature. It was the opt-in form.