The article's proposal seems worse than tab separated. Not having escaping is unacceptable of course, and once you add escaping you might as well use the stand

The article's proposal seems worse than tab separated. Not having escaping is unacceptable of course, and once you add escaping you might as well use the standard tab and newline characters as delimiters (and the \t, \n, \\ escapes plus \N for SQL NULL), resulting in a file that is properly formatted by the terminal and text editors and just works with Unix tools and most spreadsheet/database importers unlike a file with the weird separators the article proposes.