I presume you refer to Spetsnaz GRU. To suggest that there is "basically no difference" between the Spetsnaz and the SS is pretty silly. Nevertheless, for the sake of argument, I still think that the "GRU agent" socialization process described above, assuming there is martial training during youth, would produce something akin to a modern-day Spartan. Of course, they would not be interchangeable or equivalent to an ancient Spartan, but that is the best you can hope for in "our modern and degenerate age of cities of millions, ideologies, mass movements, and the like."
First off, there is no single unified model of an "ancient aristocrat" to make such a comparison. Ancient Greek and Roman aristocrats changed in habit, outlook, and behavior over time. I'm even stretching a bit to speak of "ancient Spartans," considering that Spartans were not exactly at their best in later periods, particularly during their struggle with Thebes. Accordingly, I can only refer to the values alluded to in your passage. Values like "excellence," "superior blood," "skill in arms", "work for the state," participation in "festivals, splendid ritual [ . . . ] all linked with religion, which in its extension as myth was the starting point and root of all culture," "the aim" "to develop the body," and "perfection of beauty" reminds me of the Schutzstaffel. Not all of those aspects would apply to the GRU as you claim; the GRU does not concern itself with "superior blood" and "beauty." I am also not certain they participate in any ritualistic festivals, or had their own wedding ceremonies, and so forth and so on.
Also, I do not get the whole Heinrich Himmler picture followed by fat dude wearing Nintendo products picture. If you think Himmler looks like a skinny nerd, well, then fine. Save the fat guys for the Fade jokes. (I think it is easily discernible that I was not referring to Himmler himself exemplifying aristocracy, but he had a pretty cool castle!)