They never learn
Okay, if dogs can eat a shower curtain, they can certainly enjoy cat food. We don’t understand how this dog has managed to eat and digest a 6-foot leash; maybe he couldn’t, and that’s why he had an unpleasant visit to the vet’s office. After what sounds like a traumatic experience, this dog goes on and eat a shower curtain.
If this kind of behavior doesn’t deserve online shaming, nothing does. Joking aside, it sounds like this dog might have a problem – we joke about dogs eating anything that comes their way, but this sounds like it might be dangerous. Perhaps instead of shaming him, they should check him.