macOS does not have auto update. In fact it doesn't bother you with any updates which lead to me behind patches behind because I was accustomed to Windows nagging me for updates every week.
Patently false on modern MacOS. I get a reminder about Tahoe every week or two. Plus a persistent red "1" dot in the Settings app that you can't dismiss. And a huge info/advert panel in the 'Software Update' section of Settings about Tahoe, that you can't dismiss.