A time warp to when video conferencing actually worked, as opposed to every new release of FaceTime now being some kind of avant-garde art experiment with the UI being increasingly impossible to use for both technical and non-technical users.
The last straw for me was making the recents/contacts as confusing as it was, and I personally made some accidental calls to former contacts that for some reason were made front and center.
I expect the next version will hide even more controls behind a new, indecipherable icon that looks like a 2D abstract pair of testicles.
I don't see what's confusing about the app, both on macOS an iOS. You get a preview of your face, the last contacts you called and a green "New call" button.
To me this is simple to the point of being excessively simple, especially with the "missed calls" being in a 16x16 click target dropdown.
It looks like they optimized for "calls from grandma" mode.