No, it’s pretty realistic, no one lives more east of Russia because how cold it was, honestly the only reason the USSR was able to clutch was because Germany was fighting multiple fronts and they just spammed out tanks and infantry man.
Like do you ever wonder why Germany invaded so much of the USSR in 1 year but it took them so many years to push them back?
Thats not many years England and France had a war for 100 years world war 2 was 6 years(for Germany was more like 5 since Japan surrendered after Germany) it was very fast war even Vietnam was longer war then WW2.
Now you know how the Germans lost in their mind Russia ends with Ural mountains and places like Vladivostok ,Kazan,Yekaterinburg,Novosibirsk,Chelyabinsk,Krasnoyarsk are not on the map. Bad at geographics I guess and lets not start with the bad logistics…
Germany had no economy to govern USSR even if it won even the Romans understanded that they wont be able to govern Germany and it will bankrupt them now imagine the weak German economy trying to govern almost 300 000 000 people in this vast ocean of land while the economy had capacity to support only the advance to Moscow after this the German Economy was bankrupt.