This is bullshit because pet food exists where the proteins are denatured because some animals have serious allergies. Animals can build the proteins they need from the constituent parts. There are surely proteins unique to cats, where do you think they get them, cannibalism? Are you saying veterinarians recommending such products are harming animals?
Also who said I have a cat companion, even if you were 100% correct about what constitutes neglect it would not apply to me. But you're obviously not engaging in good faith and just want someone to paint as a monster. What's really monstrous is we have an industry that brutally harvests billions of sentient creatures every year just to feed ourselves and other animals.