General Marshall knew this. That is why there was a reconstruction following WWII rather than continued punishment.
Germany is part of the West and Russia was a major cause of WW2 - from the East.
More palp.
WW2 was caused directly by the German Nazi Party and Hitler.
And by Imperial Japan and the Japanese generals.
Both were based on racist ideologies. Both committed atrocities wildly out of proportion to any post WWI bitterness.
And Germany before it launched the World War by attacking Poland, had achieved an economic turnaround.
Germany’s post WWI economic woes are often given as a cause for the rise of Nazism. Regardless, they did not cause the rise of Imperial Japan, or WW2.
And Russia, a major protagonist in WW2, had abandoned WWI and even allied with Germany to kick off WW2. Therefore, Stalin’s immense role in WW2 and Hitler’s hatred of communist Russia also do not fit the simplistic narrative.
AND most historians believe Neville Chamberlain’s appeasement policy helped cause WW2, another disconnect from your narrative.