[wpietri]

I think you've exaggerated the perspective being espoused, so your reply is equally exaggerated.

Encryption only solves the problem of a suspicious link with perfectly trustworthy endpoints and a perfectly trustworthy side channel (for keys). Nobody is saying, "don't encrypt." But people are saying, "don't assume encryption is perfectly safe."

Also, the plausible way that physical carriage is safer is that you know when interception happens. If you encrypt everything and then use your husband's pocket as a transport medium rather than a wire, that's better data security because interception is harder, and can't be done in secret.