He does acknowledge that later in the piece, although I don't know it matters one way or the other. The article is about pitching, not the truth of any particular claim.
He mentions that in the last paragraphs. It's part of his point about orthodoxy and loyalty. People hold strong opinions on either side of that debate.
Yeap basically you should do your long runs slowly and more or less fasted. It sucks and sometimes you crash but it helps train you to burn fat more efficiently. You still want to carbo load before your long (20+) race...