Earlier quoted context omitted.
Yah I believe that. But all the electronics will be shorted and likely damaged by salty water, which is conducive.
It seems like the electronics should be in an enclosure to protect them from the extreme cold, low air pressure, radiation, etc. they would encounter at 60,000 feet. Whether that would survive the fall is a different question.
That is a different threat than saltwater and huge pressure (even in relatively shallow waters, the pressure at the bottom will be massively bigger than ambient atmospheric pressure).
If I had to bet, I would expect stratospheric devices to crack like eggs in such conditions, unless they were specially developed to be both stratospheric and underwater.