I agree it's only a matter of terminology - just like Teslas "Autopilot".
"Optical zoom" has always meant continuously variable optical focal length. That doesn't mean there is a clear definition, but there is room for confusion using it in this context.
In binoculars there is quite a difference between "dual magnification binoculars" with a switch, and "zoom binoculars" which allow for continuous change.
I'd be completely happy with the use of "2x discrete optical zoom" here - it removes all confusion.
"Optical zoom" has always meant continuously variable optical focal length. That doesn't mean there is a clear definition, but there is room for confusion using it in this context.
In binoculars there is quite a difference between "dual magnification binoculars" with a switch, and "zoom binoculars" which allow for continuous change.
I'd be completely happy with the use of "2x discrete optical zoom" here - it removes all confusion.