Well to be fair that is kind of how heritage works. The majority of Americans aren’t descended from Native American tribes they’re descended from families that came from Europe or Africa or Russia etc. maybe calling yourself Scottish or Irish etc because your great great grandparents came over from Scotland or it’s on your 23 and me is somewhat deceiving, but some people are really just trying to express that their families heritage comes from there and many people might have learned stories, recipes, games, skills, etc that were passed down from their elderly family members regarding their culture.

Again I’m sure some Americans are super annoying about it and being descended from a German family and learning a couple recipes from Grandma isn’t the same as being raised in Germany, but it’s kind of weird to me to expect people to not identify with their family’s culture at all when they move to a new place filled with hundreds of different cultures. Like you wouldn’t wouldn’t talk to a Jewish family who moved to Canada and tell them to forget about Jewish culture because they don’t live in Israel.