Well, it is an interesting use of the joke. First, Yakov Smirnoff's version of the joke was usually to have the reverse of America, but have the American version make sense, but the Russian version paint a bad picture of Russia. The GGP post reverses this, having the Russian thing make sense and the American be corrupt. Since the joke is about reversal in the first place, reversing the reversal is in itself a bit funny.
Also, the jokes were originally meant to be a bit dark and ironic, and then used as a Slashdot cliche they were usually ironically ironic, resulting in a sort of nonsensical whimsey. Now, another layer of irony is added, almost returning the joke to its original sense, but I would say not quite to its original sense. So much irony has basically made it a non-joke, and simply a piercing critique of current US policy. It's pointing out that as ridiculously backwards as Soviet Russia was, it still may have been less backwards than we are now.
Now, did I really have to explain myself like that?
