“Original Americans”, I don’t know whether to roll my eyes or weep on behalf of the Indians. Many would tell you that the term “Native American” thrust on them is as offensive as if Russia were to take us over and start calling us “Native Russians”.
I think the Redskins picked “Original Americans” for their foundation name to split the difference and use neither “Native Americans”, favored by some American Indians and all the folks who are offended by American Indian mascots (of whatever ethnicity the offended happen to be), and “American Indians”, favored by many American Indians (including most in Oklahoma — which I know because my wife has done some studies on ethnic identity and on psychological concomitants of obesity with American Indians in Oklahoma).
But your analogy is wrong. America didn’t take over America. Europeans named the place America before they colonized it, so the people who were there before the colonization were properly called “native Americans”, and this was true before it became a careless habit to call the United State of America “America”. If any American Indians you know take offense at being called “native Americans”, they are really taking offense at Europeans having named the continent(s).
You said it. Most Indians have no problem with the name. Albeit a misnomer, it’s historical and not derogatory.