This perspective likely varies widely based on the culture with which you identify. Some cultures have been explicitly exploited, generally along the same axes of privilege in modern life.
For the people that know that you cannot own a culture and there is no central authority which to determine how it can be used.
No. Simpler (for you) not to consider these things :)
Cultural interchange is inevitable yes, but is its effect on the human condition negligible? No. So why not talk about it.
Also they didn't appropriate it because it was fucking Germanic to begin with.
You can't prove things like that, so why do you believe this stuff? Why do you present it as fact?
So? All culture is subjective. What is offensive in one culture can have a completely different meaning in other cultures [0]. Cultures are the result of human opinions and by definition that makes them subjective.
Human interpretation of actions, symbols, words, or what have you that defines is a culture is the direct result of a group of peoples' collective opinions given to those actions, symbols, words, or what have you. Cultural appropriation is taking something away from a culture and trying to give it a new meaning, particularly with a meaning that the original group dislikes.
Which is little more than "Our opinion on this thing came before your opinion. You're being rude by ignoring our opinion on this thing and we don't like that."
The problem with modern cultural appropriation is anemic cultural identities coupled with one-directional appropriation. But that's only a problem for some cultures.
Is it fair for any culture to complain about this?
Isn't it drastically easier for people of more privileged cultures to assume identities of less privileged cultures?
Is that directionality ok?
Also does humanity win when cultural tradition, cultural _information_ is lost forever? Are we sure we are capturing all that is useful?
Is it really inevitable or could we _choose_ to assign more value to the preservation of extant culture?