The meat industry certainly overuses antibiotics, but the claim that "people are even eating antibiotics without knowing it" doesn't seem to be accurate.
> Food animals should not have any antibiotics in their body when they are slaughtered or processed for food. Antibiotic residues are small amounts of leftover antibiotics or pieces of antibiotics that are not completely absorbed after an animal is given antibiotics. USDA, with FDA and the Environmental Protection Agency (EPA), administers the U.S. National Residue Program (NRP) to prevent residues that pose a potential threat to human health from entering the food supply.
I don't disagree, but I think part of the reason they can say that is that it has not been exhaustively studied. There are various articles on nih.gov [1] that summarize the problem and what would be required to properly study this. There is also a big monetary advantage to using antibiotics in animals which makes me skeptical of any documentation. Perhaps I am too skeptical.
https://www.cdc.gov/drugresistance/food.html
> Food animals should not have any antibiotics in their body when they are slaughtered or processed for food. Antibiotic residues are small amounts of leftover antibiotics or pieces of antibiotics that are not completely absorbed after an animal is given antibiotics. USDA, with FDA and the Environmental Protection Agency (EPA), administers the U.S. National Residue Program (NRP) to prevent residues that pose a potential threat to human health from entering the food supply.