There are also many shades of "ultra-rich". The article claims that millionaires are ultra-rich, but there is a big lifestyle divide between 7, 8 and 9 figures

There are also many shades of "ultra-rich". The article claims that millionaires are ultra-rich, but there is a big lifestyle divide between 7, 8 and 9 figures and beyond. Those people aren't living similar lives, it's silly to cluster them together as one unified block.