“Full MacOS” is available on your Mac w/o an Apple ID login...Apple ID is required for iCloud services like sync, iCloud Drive, etc..
Technically you don’t need an Apple ID for an iPhone either (just a SIM/phone #)...it just makes it more “tied in” to the Apple ecosystem of your other devices if you do enter it in..
You can “De-Google” your Android phone...takes some work:
https://www.tomsguide.com/features/i-tried-de-googled-android-again-heres-how-that-went
https://itsfoss.com/android-distributions-roms/
It sounds similar to what Microsoft is doing.
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