origin of the rumor: https://www.wired.com/story/how-email-open-tracking-quietly-took-over-the-web/ https://www.wired.com/story/how-email-open-tracking-quietly-

origin of the rumor: https://www.wired.com/story/how-email-open-tracking-quietly-took-over-the-web/ https://www.wired.com/story/how-email-open-tracking-quietly-... (or if you only want the Tim Cook part: https://news.softpedia.com/news/apple-s-ceo-tim-cook-probably-isn-t-using-windows-to-read-his-emails-518943.shtml https://news.softpedia.com/news/apple-s-ceo-tim-cook-probabl... )