As someone who has worked with PG, MSSQL, Oracle, MySQL and others for almost two decades - I can promise you the author is misinformed about more than just enterprise politics.
I've actually written small wrapper scripts that feed a query into MS SQL, fetch the results row by row and--with a proper CSV writer (eg Python's csv, Perl's Text::CSV, etc), dump to file. It's relatively slow, but at least it works.