Sounds interesting but now there are encrypted decentralized e-mail systems like bitmessage. So if you are doing anything supersecret then bitmessage is the perfect solution.
That argument works assuming you're the only one being watched. "Oh chris hasn't done anything bad even though he's hiding, we can just ignore him now". It's more like "99.8% of people don't hide, chrischen is one that does, monitor that guy".
iMessage is end-to-end encrypted, and I don't think I mentioned bitmessage (not sure what that is). It is privacy all the time, even if you have nothing to hide. Privacy by default—which is what I was talking about in the comment you replied to.
if this is their official claim then it is most certainly snake-oil:
> Bitmessage gained a reputation for being out of reach of warrantless wiretapping conducted by the National Security Agency (NSA), due to the decentralized nature of the protocol, and its encryption being difficult to crack. As a result, downloads of the Bitmessage program increased fivefold during June 2013, after news broke of classified email surveillance activities conducted by the NSA.