I agree with pretty much everything you said. My only concern is that by forcing devs to support Apple ID, Apple has effectively eliminated all incentive they

I agree with pretty much everything you said. My only concern is that by forcing devs to support Apple ID, Apple has effectively eliminated all incentive they have to make it a compelling experience for users and developers. Whatever Apple decides to do with Apple ID from here, everyone else just has to deal with it. I really like the idea that an SSO can also server as the single point of trust for personal information like an email address. I just wish Apple let that feature speak for itself. I wish they put in the effort to make Apple ID a popular auth solution because both devs and users actually want it - not because they're forced to have it.