That'd be a fun little vignette to read.
Would this person find this phenomena somewhat understandable: OTL Stalin died in 1953, before he could do the things that made him the most evil person ever. Also, the OTL collapse led to the loss of territory, the decline of economic living standards, a corrupt drunk running the country, etc.
*snicker* As if teh "Drumpf" is somehow a mass murderer on par with Stalin (both IOTL and ITTL; and I know some will bring up issues related to him but I'm not in the mood to debate them here). Anyway, I'm not sure if Russians will refer to him as his birth name since it sounds pretty hard to pronounce; the Germans didn't have to resort to Hitler's other name so why bother having Russians use Stalin's other name?
The idea is that by calling someone by their original name, it weakens the myth surrounding them.
Stalin is name associated with "strength" and "power" in Russia.
The name "Dzhugashvili" isn't.
By calling Stalin by his birth name, it is easier to remove the myth and expose the man for what he really was.
Stalin was the strong leader who made Russia into an industrial power, beat the Nazis and the Chinese, and was the heir to Lenin.
Dzhugashvili is the demented Georgian who used trickery to get to power, starved millions of people, slaughtered his comrades, committed numerous acts of genocide, named a serial rapist and murderer as his policeman, backstabbed the Spanish Republicans, worked with the Nazis to carve up Poland, ill-prepared for a Nazi invasion, shot retreating soldiers, broke his promises at Yalta, committed genocide against the Jews, slaughtered Caucasus and Baltic peoples, ground China into dust.
By calling him Dzhugashvili, it makes it easier to not worship Stalin and see him for the petty, diseased little shit he really was.