I see where I got confused — I misread the tense: I thought they were talking about a present/recent push to change the oil used in the fries, not the one from

I see where I got confused — I misread the tense: I thought they were talking about a present/recent push to change the oil used in the fries, not the one from the 1980s (which resulted in replacing the beef tallow around 1990 or so). Thanks for the clarification.