Ironically, macOS already shows an error message when an account is not using iCloud. Using both macOS and Windows 11 on an almost daily basis, they are really

Ironically, macOS already shows an error message when an account is not using iCloud. Using both macOS and Windows 11 on an almost daily basis, they are really not that different when it comes to nagging users. Both show full-screen displays on startup from time to time where they want to change some settings (activating Siri, using Edge as default browser, ...), try to sell additional services, make you use an online account, and come with a lot of bloatware.