> It seems plausible there may be some adaptation to the electrical properties of being at the surface

This is like saying it’s plausible that wearing a bracelet with a small magnet in it will have health benefits. It’s pure woo. There’s no reason to believe this from a scientific angle. It’s perhaps not impossible but it is certainly not plausible.

> there was a time when fiber in food was reasonably seen as just inefficient waste

When was this?