I think what happens is that overtime certain groups have taken "ownership" over the word by using it as a racial slur but originally it just means "someone from Kush". In Hebrew if you take a location and add "I" as a suffix it means someone originating from that place, e.g: "Americai"-> someone from America, "Kushi"-> someone from Kush which is a country occasionally used in the bible to refer to Africa.
I guess in English there are also such words that originally had no use as a slur but later "denominated" to racial slurs.
The reference to Kushi->Kof (monkey) is totally off. Doesn't sound similar at all for my native Hebrew ears.
Look, this is just childish equivocation. A lot of words that are considered offensive also have (or used to have) other, innocuous meanings. What you're doing is like a child saying "Nah-uh, this word just means happy!"
A word is offensive in polite society because a population of people finds it hurtful, or because another population of people uses it in an intentionally hurtful way. Usually it's both. Innocent words can become slurs, and other slurs, over time, can become obscure and lose their power.
For example, the "n-word" in English obviously comes from the Spanish or Portuguese for the color black. Despite that, it's an offensive slur.
The older colloquial term in the English language for Romani people apparently comes from the word "Egyptian." There is no problem with being Egyptian. But many people find this particular word hurtful, and polite society is actively trying to retire it.
Maybe you have personal ideas about what "should" or "shouldn't" be hurtful, but I'm surprised that we don't seem to agree on how people actually use these words in reality. "Kushi" can be a slur even if your grandma's pet name for you was "my little Kushi" and you love that word to death.
The treadmill stops when you actually change public attitudes. African American/Black have been the main terms in American language for 50 years now, with some back and forth between the two, but no further replacement.
Because you prefer “Jamaican”? Or “African American”? Or nothing? I can’t tell what you mean from context.
I don’t think “black” “white” and “brown” can go away as descriptors like “blond” and “redhead”, but maybe someday they will stop being identity categories. America already has large non-native black populations in certain areas (West Africans, Somalis, West Indies, etc.), but I think the country still thinks of Black = African American = descendent of U.S. slaves for now, because the non-native blacks are still mostly focused regionally, like Somalis in Minnesota.
I guess this is another reason for the treadmill: distinctions that were implicit before maybe need to be made explicit as different things become salient.
You said the treadmill stops when you change public attitude, and you imply the terms Black and African American used to refer to black people are acceptable designations for groups of people as of now. I'm making the point that that is completely subjective, as in my case I don't like being referred to as an African American, because I'm not, and black is basically a synonym for "Not african american", yet these are the default terms and you say that there is "no further replacement". My point is that words change meaning all the time, we are not heading into some inevitable singularity where all of these words over here are objectively good in all situations and all of those words are objectively bad in all situations and this will remain so for eternity - language is not that stagnant nor black and white, and for me that is a good thing. It is 100% your personal opinion that you find the terms Black and African American acceptable designations for groups for the foreseeable future, but don't project your personal opinion onto others - I personally look forward to the day where people refer to me as Jamaican and not just "black" or mistakenly, African American, and in the same way there are those who hold the opposite opinion and those who don't want to be generalized at all. That you personally like or dont like a particular label has no bearing on whether or not everyone else agrees with your opinion.
Tl;dr your statement "The [euphemism] treadmill stops when you actually change public attitudes" actually means "The euphemism treadmill stops when you actually change public attitudes in such a way that I am personally comfortable with it's final state", because in reality the treadmill will never stop, someone will always push to keep it going, it's the reason why language shifts and changes over time.
I guess in English there are also such words that originally had no use as a slur but later "denominated" to racial slurs.
The reference to Kushi->Kof (monkey) is totally off. Doesn't sound similar at all for my native Hebrew ears.