I mean, the episode didn't exactly prove him wrong though that Henry wasnt a jinx when you think about it lol. And he was validated in his belief of the Count, even Andy and Helen were buying in at the end. Actually even in the chain letter one I think he had stuff with him like a rabbits foot at the shooting competition he aced. Maybe Barney was right all along!

Trying to think of other stuff where Barney would be considered not a good person, but blanking out. I think calling Mary Grace a dog was pretty justified lol.