Yes, absolutely. We must strive to do much better. I said as much in my comment. That doesn’t make his naive projection of child like innocence and purity on anything non human credible.
My takeaway from the article was that dolphins are presented as victims of humans, not necessarily as morally superior or having childlike innocence.
Anyway, a lot of philosophizing and debating extreme corner cases is just an excuse to avoid the elephant in the room. No amount of lions hunting zebras or dolphins practicing gang rape can be an excuse for the horrible way intelligent animals are treated today by humans considering themselves civilized and humane. Just as concern for the nutritional requirements of poor children in third world countries is not a free pass for wealthy westerners to consume large amounts of animal products themselves without much regard to environmental impact and animal welfare.