Yes. I think it probably had to do with their stubborn viewpoint. They thought they were the best. They thought they were an unsinkable ship. And when people do that, they start making careless mistakes. Its really quite silly they did literally nothing to prepare for the winter front, or at least try to postpone invading Russia until after winter had passed.

But I suppose the final version of events turned out alright, all things considered. They're almost entirely gone now and that's what matters.