I need to add here (because I always do on the off-chance that it might help someone) that you can have too low of blood sugar depending on your specific genetics. I had an a1c of 3.8 when I was doing keto. I had basically had nondiabetic hypoglycemia for so long I was no longer showing symptoms. Please see a doctor if you do anything too dramatic, diet-wise.
I work at a grocery store now and what you say is still true.
Items are only thrown out if they’ve been removed from the store before returning.