As a company, Apple has never understood what gaming is at the deepest, core, systemic level.
There have been hundreds of external systems integrating with games. There are dozens of them now. And only Apple manages to create an excruciatingly slow animation to display a simple login form that's not even integrated with Apple's own TouchID.
Needless to say that the Cancel button that appears in the top right corner is unresponsive until the animation completes.