If you read it as "which of the dates printed on food items are valid?" then maybe. I read it as "Because almost all the printed dates are invalid, it's better

If you read it as "which of the dates printed on food items are valid?" then maybe. I read it as "Because almost all the printed dates are invalid, it's better to use these dates instead: bread: weeks, beans: years, etc.," and I find that more a complementary fit.