In some sense fast food is American culture as well but I don't see much benefit in using tax money to preserve that culture. What I am trying to say is that "

In some sense fast food is American culture as well but I don't see much benefit in using tax money to preserve that culture. What I am trying to say is that "culture", native or not, does not necessarily have anything to do with public dollars. That totally depends on the context (history, popularity and otherwise) and can be political. e.g. In the US, performing arts organizations receive very little to no public funding. (In fact, one such funding almost got cut in 2017 in Trump's tax bill.)