That 1974 article was titled "Is It Gluttony?" There was a joke running around the congregation about setting the table with clear glass plates and placing a copy of that magazine under each plate.
Even back then, being overweight or even obese was not incontrovertible evidence of gluttony. It was more about greedily sucking down more than your share while depriving others of their portions. Seriously, when does that ever happen in western countries?
A case could have been made against my father. My brother and his wife and my ex and I were visiting the folks one time, and we bought all the makings for pizza, which we planned to prepare the next day. When the time came to make the pizza we found about one inch of the pepperoni stick remaining in the fridge. We were all looking at each other when my father innocently piped up, "Oh, were you planning to use that?" He had eaten almost the whole foot-long stick of pepperoni during the night. I can't even imagine the spirited rebellion my stomach would have put up after an assault like that in the wee hours.