I think this is quite a bit different.
In many of those cases, you are taking material wealth from the area, often through use of force against the population there.
This is clearly different than someone observing your practices, and mimicking them, which essentially doesn’t affect you at all.
Consider a recent example of the claimed cultural appropriation, where a singer was accused of it for wearing a particular dress.
That dress was produced by someone, and sold to the actress. Those are the only two people involved in that transaction. Some other asian person does not have some sort of ownership in that dress, capable of objecting their opinion of the sale into the transaction.
In other cases, we aren’t even talking about material goods are all. Some of these claims are talking about “appropriating” music. The idea that people cannot be influenced by other musicians, is absurd on its face… Because that’s how all music is formed.
All of these claims are inconsistent in their underlying rationale, ultimately just picking isolated cases of behavior and determining it’s bad in order to attack someone that they wanted too attack anyway, while obviously not criticizing the behavior in a general sense because doing so would essentially put a halt to normal human interactions.
If something is actually exploiting someone, then that exploitation can be criticized on its own, and can be criticized universally.
But simply taking an element from a different culture is not exploitation.
Imagine some chef took an ethnic dish from another culture, and started serving it, and got a ton of money for doing so. Is that somehow exploitative of the original culture? No, not at all. It wouldn’t hurt them in the least.
Likewise, if a fashion designer took some traditional dress and manufactured and sold it, that doesn’t harm the culture the dress type originally showed up in. Indeed, it may benefit it’s members by acclimating different societies to their practices, and reduce xenophobia encountered in the future.