The current process involves 2 button presses (the "?" followed by "yes"), which is not only a distraction but there is also the danger of accidentally pressing "no" which the leaves you with no position data at all. This has happened to me a couple of times in turbulent conditions or at times of high workload, and is a real pain.

Would there ever be a scenario where you would NOT want to fall back to GPS position-only data?

Could this be simplified to a single button-press, or even better make a selectable option to automate the fallback process entirely without any user input, but keeping the warning banner and audio alarm? Even if the warnings were missed, it would be obvious that traffic information had ceased as the traffic square would have a red X through it.