As a Google user I'm not in tremendously better shape, but my PCs don't require Google to function, and at least I could load a different ROM on my phone if needed. Not that Android is tremendously useful outside the Google ecosystem.
Macs don't require an Apple account to function either.
i helped someone setup their macbook air M1 a few days ago. the least i can say is that they were asked to create an apple ID and they were asked for a phone number.
those steps were not skippable.
i was disturbed to say the least because i was recommending them to skip those steps and enter that information when they felt comfortable. an OS should only care about the user account. but two accounts and external identification were needed in this case.
What if you set up a Mac with an Apple account, Apple permabans you for something, then you forget your password and want to wipe and restore your Mac?