Canned chicken is perfectly suitable for eating. They used to do it all the time in the olden days. Food preservation.
Obviously you'd use the meat and bones to make a soup or just the meat for another dish that would be cooked again.
Food snobbery is a huge problem.
The Atlas does get a crazy amount of food snobbery, but in this case, it's warranted. For the record, people in the old days also used to use outhouses. Wasn't their fault. It was the best they could do. We can do better today than canned chicken.