Re:iOS now requires Sign On with Apple alongside other auth ...
by buboard on Sunday March 08, 2020 @03:56AM
(#22516888)
sign in with apple locks you into apple's caprices, there is no way around that. Apple will know where you 're signing in , and you will lose access to your account if apple decides they no longer like the app, or they no longer like you.
You're free to roll your own sign-in system, in which case you are not required to offer Sign In with Apple.
Not seeing a problem here.