I would have expected to agree with you, but in thinking it through, I am proud of things I didn’t do, but not for myself, if that makes sense. I’m proud of my mom for getting through grad school with a small child (my sister, I wasn’t even born yet), and I’m proud of my dad for quitting drinking a decade before. Those are both very difficult things and I feel positive about them in a way that feels similar to how I feel when I understand a new aspect of my field and the same as how I feel when my niece learns a new thing. I would call it more of an indirect pride, I guess.

I can see extending that to more distant ancestors, especially if there’s been a consistent threat and various ancestors were instrumental or inspirational against that threat. It’s not a requirement to feel any sort of way about your forebears, but I don’t think it’s out of line to feel pride or shame. I also don’t think it really makes a difference if you’re blood related to the people or just culturally related (or anywhere in between), so I guess it would apply to a culture at large as well (generally geographically related).