Most of them are patently incorrect, and most of those don't even care to educate themselves since they keep repeating cheap stuff they heard from other bright people and that's it. How many heard about accepting refugees despite being literally surrounded by axis and facing starvation of their own people (how many nations would do that including yours), or not-so-secret massive collaboration with western allies while on surface acting as neutral ie Campione d'Italia, and so on and on).

They were neutral in WWII like ie Spain was, think a bit what does it actually means. Not participating in conflict in any way. So they accepted both jewish and nazi gold or art, and everybody's else. If you want to understand why some of that was kept around after the war maybe reading about numbered accounts would enlight you. If you actually care to understand history as it happened.

Hitler had plans to conquer Switzerland after dealing with Russia, he was aware that they were 'most free and most armed nation in the world', fiercely independent and taking them would cost him dearly not only due to terrain.

Literally nobody had come out of WWII with properly clean slate, you just need to dig (not even deep) to find abhorable stuff on everybody, to different volume of course. Swiss have no problem acknowledging their mistakes, much more than most other nations.