The implementation of apple's sign in is just Oauth 2 with json web tokens using key's which is good. But they changed the field names to make compatibility just a bit of a pain. developer.okta.com/blog/2019…

I am not sure this is correct. In this screenshot, from the video you linked, there is a close box next to the Name field. See also the doc (developer.apple.com/document…)

I hope I’m wrong. Looking at the ui it shows users being able to not provide it but I can’t find info in the code about that.