"you could argue it was the extreme punishment handed out after WW
21 that led to the rise of the Nazi's"
The West would have done well to deal with Ludendorff and Hindenburg and stop their "stab in the back" myth. If it hadn't been Adolph, it's quite likely Ludendorff would have found someone else. He was already banging on about the master race, exterminating Russians, an empire in the East and "international" (i.e. Jewish) capital attacking Germany in 1916.
If the West had really supported the Weimar republic instead of leaving it to be blamed for war reparations, WW2 might well not have happened. As ye sow, so shall ye reap.