Are you sure about that?

I wouldn't be surprised if the rules were implemented at a time when RF interference was not only possible, but probable. Keep in mind that modern electronics operate at lower power and higher frequencies. Both will reduce the likelihood of interference, so maybe it isn't much of an issue today. That doesn't mean that it wasn't an issue in the past. (Also note that I'm not eliminating the potential for problems since some electronics are poorly designed.)

Then again, feel free to ignore myself and anyone else who argues from the perspective of physics, electrical engineering, or RF engineering. It is clear that we do not understand how modern gadgets work, since everyone knows that these gadgets operate on the principles of magic.