I know, I know, the idea is incomplete, it needs some tweaks and refinement. It's just there to demonstrate the kind of power, freedom, and creativity we should be expecting to be pointed at crypto-capable open-source projects in the future we're looking at.
As for it being a tremendous amount of work: First, I'd guess that, given the infrastructure they already have, they could probably pull it off with a few dozen people. It's not bigger than, say, Reddit (78 employees?!). Second, have you seen how much effort they're putting into the kind of thing? They already have server cabinets throughout the US that read most of American's internet. IIRC they managed to stick a black box between Google's datacenters that could snoop on people's email while it was flying back and forth between their distributed storage system. Just imagine how much money, physical access, and and reverse-engineering those things took. And not only that, but that was theoretically GCHQ that did them, not the NSA! Foreign soil!
Seriously. The right mindset here isn't that it's "too much effort" or that it "doesn't work that way". We're dealing with something that has in the past demonstrated the ability to do these kinds of things. If you want a good set of tools for getting into the right state of mind for this, we should be treating it sort of like a hostile superintelligence, not any kind of bureaucracy.