No criticism from me towards apple or Anthropic. Both parties made their choice. Apple was late to the identity business and the other ships had already sailed.

Third party logins are an extension and a massive risk to any website that doesn't include email hosting.

We have see identity providers dissapear, and people may change their mind.

Easiest way is to register you rown domain and use it with an identity provider of your choice and be able to move it anywhere.

Otherwise we are a faceless citizen of a corporation that can handle access to our identity and everything attached to it without recourse or access to anyone.