Mostly the muh nazis in Ukraine meme is used by putin to muster support within russia to bring out emotional feelings of patriotism by invoking feelings that they are reliving their perceived glory of ww2. The fact is strangely enough there are neo nazi larpers within russia, including the russian army as well. The thing is within Ukraine there is still a favorable perception towards german nat soc, due to them liberating them from the Soviets after they deliberately starved close to 7 million ethnic Ukrainians.