2. “What if B appropriates from A?”
This is not the same thing. This is assimilation.
Historically, B culture has been considered the “other”. A culture has been considered the norm.
To cut to the chase, black women and girls having weaves is not the same as non-black women and girls having braids. For centuries, textured hair has been considered the “other” so black women and girls have had to manipulate it for a looser curl pattern so they can be “acceptable” e.g. Tignon laws, the term “nappy”, the term “good hair”, the black women and girls who’ve been fired and reprimanded for having “inappropriate hairstyles” and the abundance of hair straightening products that have been advertised for decades.
B takes part in A culture because they need it to be “acceptable”. A takes part in B culture because it’s fun. B can’t drop A culture because it’s “the norm”. A can drop B culture because it’s “not fun anymore”.
3. “So we’re banning A from taking things from B?!”
No. Telling someone to be careful of something is not telling them not to do it. ~The bigger picture please.~
4. “Why can’t B just teach A? Problem solved!” For some reason I used a cake analogy so just roll with it
B teaching A is great! But again, the difference. B can choose to share their cake with A if they want, but a long time ago, let’s say 400 years, it was common practise for A people to steal cake from B people. Nowadays, some A people make fun of some B people because they bake a certain way so it makes sense why B isn’t eager to share recipes. Does this excuse B being rude about it? No, but it isn’t B’s job to teach everyone how to bake.