I think the ability to jury-rig an antenna or repair a broken radio might have more value than the Ham license itself in some survival situations, especially an aircraft crash.

In many small aircraft crashes, the radio will remain serviceable although the antenna is destroyed; being able to rig an improvised antenna or replace a "rubber ducky" antenna with a larger one, could mean the difference between being found and remaining lost forever.

In fact, even the ability to trouble-shoot and operate a radio could be invaluable; I once read about a case where the pilot, despite a debilitating spinal injury, had to get up and show the passengers how to operate the aircraft radio.