No where in those articles does it state that making hamburgers has been treated as manufacturing.
In fact the cbs article says "The report does not recommend that burger-flippers be counted alongside factory workers."
There was a report that discussed definitions and how they affected things like tax breaks. The news articles had fun speculating how it would help labor statistics if they did start counting these as manufacturing jobs. But it was just speculation. Wild speculation.
I think the author of this article is the same researcher mentioned in that chapter. And the drug dealer story in Freakonomics. Either that, or all Indian names sound the same to me.