We can take an example. Female genital mutilation. Why do I think muslim west Africans moving to my country should stop female genital mutilation in my country instead of my culture starting practicing female genital mutilation? That's quite clear. I think it's an immoral practice. Doesn't matter which culture is doing it. Not every cultural difference is a neutral thing. My culture for sure also has negative traits in it. I would also condemn child marriage, purity culture, strict family patriarchy, and clan honor culture. If someone is from a culture that sees gay people as an abomination to god I would condemn that as well.