Oh well, at least I'm cooler than my friends :)
To move a whole enterprise is hard.
This is now possible with NAT64, but it requires a translator box and somebody has to pay for that.
Damn... It seems to take a government agency to keep the world spinning.
But the US military is one of the World's largest oil consumers.
This "strong-arming" is not that much different than asking a new car salesman why he is selling GM while personally driving an Audi.
Speaking as a Network Engineer - I actually quite like IPv6. It took about 3+ years for my eyes (and brain) to get used to seeing 128 bit addresses, and remembering them, but I'm pretty good now. I think that's what the article is saying, too - the DoD wants people to start getting used to the protocol so that it doesn't take a crack team to deploy the protocol. As one who interviews network engineers frequently, I have yet to run into more than half a dozen out of 100 (and that's being generous) who could speak coherently about IPv6, and have never run into one who knew something as simple as what a solicited nodes multicast address was (basically the address you use for the IPv6 equivalent of ARP).
So - the technology is getting there, now we need to get the network engineers moving along...