I've thought about this topic a lot, being a white American male that plays afrobeat, funk, and latin music in a multicultural 12 piece band. In general, I believe:
- You're allowed to like things from other cultures. Nobody can tell you what you media, food, or art you can or can't consume.
- People of most cultures LOVE when other people are attracted to their culture.
- The general fluidity of cultural appropriation in a society is a good sign that everyone is getting along. It means the barriers are coming down.
Of course, you're right. Crossing the line can cause problems if enough people are doing it and benefitting from it at the expense of a marginalized group. Otherwise, enjoy your sushi with your dreads and rope sandals after your yoga class.