I don't think "millions of end-users" want broken websites because now another developer (Google) gets to decide what's correct (instead of the web dev). A bet

I don't think "millions of end-users" want broken websites because now another developer (Google) gets to decide what's correct (instead of the web dev). A better solution could be to just behave reasonably by default but allow the user to re-enable auto-fill with a single click.