it has a specific meaning implying a particular power relationship: the more powerful culture appropriates from the less powerful. It's very different from the immigrant changing to fit in.
It's a bs distinction though. It's like saying if the less powerful give the flue to the more powerful, that is ok, but if the more powerful give it to the less powerful, it has moral implications.
No. The flu makes no distinctions, that's what it is.
Culture disseminates. Ideas disseminate. When I see something you have done, it exists in my mind, it's part of me, it influences other ideas I have. If I hear your music, it causes my ear to develop in a particular way. If I eat your food, it changes my palate.
There is nothing I can do about these things, really, whatever our power relationship is. It's the nature of ideas, experiences.