The Language of Papua New Guinea

Papua New Guinea is the most linguistically dense area in the world and the language is cooped so according to our grammar our grammar here um it's classified as a family level isolate. When this grammar was written in the 80s it only had two thousand or so speakers I believe right it may be dead by now. If any other listeners know of an American dialect that does that then uh let us know  it just seems weird to me"