I totally agree with you. We were talking about the US.
In some cultures, the aspect of giving every single person inalienable rights and equality isn't explicitly valued like it is in the west. I wouldn't want to impose western values on those cultures.
However, your argument boils down to whataboutism. Yes there are other countries with other forms of privilege. Yes there are civilizations in the past with other forms of privilege. In the US we tend to value equality, and in the pursuit of that we must recognize all forms of privilege that exist in our society. It doesn't matter that it exists elsewhere.
FYI I am not at all talking about the original article. I was simply responding to this tangent comment thread.