But that will completely break Sign in with Apple, which no service is ever going to do. I really don’t get the problem here.
That random online shop you order something from once? The IT forum that only shows external links for signed-in users? The whacky new AI tool you want to try out? The startup "sign up for updates" newsletter box? None of these offer Sign in with Apple. For all of them Hide My Email avoids having to disclose your real email address. This is broken now.