alt Hacker NewsPet peeve of mine as well.
To me this is a major problem of everyone saying security through obscurity is bad. But then those same people reinforcing encryption as a gospel of security.
As far as I know, there are no secrets in the world. Encryption is not providing security to anything. It only gives you guarantees wrt to a certain interpretation/perspective.
Modern encryption is underpinned by, no common folk (not no one or even the people who would have the ability to which are probably the ones that should be worried about) should be able to decrypt your contents _within your lifetime_ - which in and of itself is a pragmatic goal, but does not ensure secrets remain secrets.
That isn't technically true either ;) (sorry to be pedantic!)
If your data is encrypted, what your adversary needs is some information about you - which they can gather by either buying it from someone or by investigating you - and a $10 wrench to go over there and get the keys out from you...
Most secrets are only secrets because the combination of obscurity and incentives raises the bar high enough so no one who wants to bother really bothers.