I was in a situation recently in which someone from one of my communities urged me to cut off my dreadlocks, so I have given a lot of thought to this. While my thoughts on this were on dreadlocks specifically they are at least to some degree generalizable onto CA.
I made a similar observation as your third argument: that contemporary society recognizes the property of individuals and coorporations but not of demographic groups. If an artist created some piece of art and someone else claimed that as their idea and made money on it while none of those money being returned back to the artist, most people would consider that ethically problematic. Many cultural artifacts of certain demographic groups are featured in designs, movies, stageperformances and such while none of the generated capital goes to the original group many of whom are living in proverty.
The most concrete argument I could think of in regards to dreadlocks is that there already exists a unfavorable bias towards black people in regards to getting jobs. There’s a stereotype of black people in the US being lazy and having a poor workethic, and the stereotype of someone with dreadlocks is to be lazy, smoke pot, and have a poor work ethic. If a white person wears a black hairstyle and strengthens the stereotype there’s a reasonably plausible causal link to making it more difficult for black people to get work and in the US not having a job quickly leads to .
While none of those arguments applies to my situation specifically I could understand a deontological viewpoint of discouraging CA in general to avoid the instances in which it does cause harm.
On a tangent I find the term African American infuriating due to it’s blatant imprecise. People who come from south africa and are now living in the US would be white African Americans. America covers not one but two continents and yet only people from a single country within one of the continents call themselves ‘Americans’.
[1] For scenario 1(herd immunity) to be a viable option we need that the virus doesn’t mutate too fast and that that the reinfection rate is low enough. To my knowledge there is still a large uncertainty about either of those conditions.
[2] Some people in my circle are suggesting that we get rid of handshakes on a permanent basis, arguing that the expected spread of not only covid but also other regular germs. I am worried about costs associated with increased isolation but acknowledge that it would save lives.