Once again, Yahtzee knocks several jokes out of the park with this one, like when he complains about needing to switch to his binoculars to mark targets when his sniper scope could've done the same thing ("YOU STRIPEY FUCK!!!" (Gets dragged off by an Imp)).
However, while his rant about the Russians being shoehorned in as the main villains was by far the second funniest gag on the list (second only to the last joke, which can only be seen to be believed), I honestly think it's more justified in this case than making a bunch of "ultranationalists" take over Russia so the Cold War-nostalgia market can live out their fantasies of shooting up Moscow.
For instance, while the US and USSR actually WERE allies at this point, it was mostly because those fuckin' Nazis had it in for both of them. I know it might come as a surprise to Yahtzee, but capitalist nations never were "allies" (in the sense of genuine friendship, not teeth-clenched teamwork) with communist nations, going all the way back to when Europe tried to support movements to get rid of the nascent Soviet government under Lenin. And while that and later shady and subversive movements against the USSR during the Cold War were, well, shady and subversive, they were justified by the USSR being as shady and subversive right back, even if not to the extent that Cold War propaganda on our side made them out to be.
And while the WW2 Soviets have undergone a recent bit of romanticism for being the guys to REALLY hammer the Third Reich down, they were also the most likely to have launched an attack on Western Europe and the United States. For one thing, Stalin was by far the most brutal and aggressive of all the Soviet Union leaders, to the point Khrushchev made a point of "De-Stalinization" (I.E. exposing the atrocities under Stalin's rule, and tearing down the image he had built during his reign) just to disassociate Communism from him. Relations between the USSR and the west had been rapidly deteriorating prior to WW2, and if it wasn't for Fascism literally jumping into the middle of their conflict, it would've been likely that WW2 would've been waged between Western Europe and Russia (the original Red Alert made it the major plot point, with Einstein erasing Hitler from history to prevent WW2, only for Stalin to launch an all-out invasion of Europe in 1949).
And the major plot point of the story (which is given in a cutscene Yahtzee has apparently elected to skim over) is that it really is a prelude to the actual Cold War, with both Allies and Soviets looking to the V2 program as a way to fight the next war they mutually felt was inevitable (the sniper's ending monologue even straight-up says that this marked the START of the Cold War... and that he was "it's first soldier"): again, it does seem dodgier than straight up taking on Nazis, but it at least has more realistic, historical context than having the Soviet Union essentially come back from the grave in the modern era, and then have them rip off Red Dawn (except for the parts that made it cool).