Postscript/update from the OP: I overcame my brief addiction, but without finding any way to disable the game.
I continued to play it occasionally and I think just last week finished the last bonus stage (ie got to the end, not with all the medals, etc).
Then one morning last week I got in the car and the screen was off. Reboot: no effect. Drove (without any audible turn signals, or any help with my driving (ahhh!) or reverse camera (ahhh!)) to the Tesla service centre, where the car has been for a week (got a Performance loaner car: wheee! ). Anyway, I'm getting sidetracked: the point is that my entire computer was apparently dead and has been replaced. So Skyforce profile will be all lost when the car is ready (waiting for a ball joint /arm for 2 weeks !).