There’s nothing puzzling about it: they lied to themselves until they believe their own lies. If they were capable of any sort of self-introspection or shame, they wouldn’t be the people they are.
And there’s nothing professional about being a pathological liar and propaganda mouthpiece for a fascist administration.
It’s not stupidity that makes these people believe the things they do, it’s a concerted effort at self-delusion. They simply hate the world the way it is (and the people in it) so they invent a fantasy reality in which they can pretend that we all live because they simply refuse to accept the world for what it is and people for who they are.
I bet all those unforgivable pieces of shit who stayed home last November instead of going out to vote feel totally vindicated right now
It’s worth considering that a good reason they decided to start invading other countries is because their economy was in the absolute fucking toilet. The interwar period Was nothing but economic failure for Germany, mostly because they had these gigantic sanctions and embargo and reparation payments to deal with. All that war spending didn’t really help that much.