“retard” is a good word for this. For a server hosted inside the US, it makes things much more expensive (but not nearly impossible) for the NSA.
From the article you linked:
...there are other actions powerful adversaries could take. For example, they could convince the server operator to simply record all session keys.
So, the NSA cannot quickly pick out your server's traffic at their traffic hub monitors and decrypt it with the root SSL certificates they coerced vendors to give them.
What they can still do, if your server is in the US, is coerce the server operator to record all session keys so they can decrypt all traffic from that point onwards. This is much more expensive though.
The nice part about this is that a server hosted outside the US would only have to worry about less-powerful, less-funded government spies going through all of this. In Japan, the government may not do it at all unless your server's activity warrants a criminal investigation.