As I said, no real specification. It reads "This section documents the format that seems to be followed by most implementations". Another part reads "Each field may or may not be enclosed in double quotes (however some programs, such as Microsoft Excel, do not use double quotes at all)."
And then laid down which ones would be used and exactly how, and how to specify that you conform. Http is just describing process of how the spec came about. Because there is no metadata in csv you cannot even say how or if you conform.
