Then your issue isn't with Apple's SSO, it is with all SSO providers. Facebook/Google login are not eternal. The only difference is the proxy, which can be disa

Then your issue isn't with Apple's SSO, it is with all SSO providers. Facebook/Google login are not eternal. The only difference is the proxy, which can be disabled. Any website offering SSO options would have a sunset period to move it over if a provider went under...and if they don't, they are likely defunct at that point anyways...