[Terretta]

> And I realized, maybe I don't need "sign in with apple".

Developers don't have to have most things they put in the apps they ship. Customers, on the other hand...

As of a decade ago (2016) Apple already had 782 million total (including free) iCloud users, with 73% or 570 million of them authenticated to iCloud.

By 2023, Apple has 973 million paying subscribers to its services.

[ASalazarMX]

This is more about Apple predatory tactics within their walled garden than actual improvement of their services. Not paying Apple for additional storage means you can't even be sure your phone backup in iCloud is complete.