The whole "What if?" fails at times because Millar paints Superman as bad simply as an extension of "Russia = bad" stemming from lingering Cold War resentment on both sides, accurate or not. If the same character had been trying to reach the same goal but from a different home location

I think a fair interpretation would point to the lack of an equivalent to:

A) the Kents

B) following from A, there is no Clark Kent.

In Soviet Russia, Superman doesn’t bother with the pretense of a human identity. I think that’s a statement on the dehumanization of the people who live under such systems. But even without reading that much into things, the lack of his moral guidestones I think cant be understated.

I found the twist neat but it is quite a stretch lol. I think the rest stands on its own regardless and that epilogue can just be taken as a funny wink by Miller y’know, perhaps playing on the popularity of planet of the apes at the time hah