Don’t forget the beef subsidies, too!
Per a 2015 Berkeley study, witjouy the beef and dairy subsidies, a Big Mac would cost $13 and a pound of beef would cost $30. Obviously both would be more now since inflation has raised prices by about 1/3 across the board and food prices have definitely grown faster than the average.
You might want to re-read the article. That quote was talking about lithium ion batteries.