Send clowns,
They were all dialing in unison from the end of the runway in KLAS at my request to see if any problems occured...and none noted...pleased to report.
This does not mean of course that in the air, problems may develop, so "OFF with 'em" is a good idea, especially in newer glass designs.
Still do believe however that EMF shielding is subordinated in the original design criteria with many aircraft...unfortunately.