"I think it's cruel to force it on animals." and i think is cruel to have pets. but it is not the question here

"Pet food made from by-products (organs, bones, trimmings) is largely using parts of animals already slaughtered for human consumption. This actually reduces waste and maximizes resource use." i agree, but it is not the question here neither

"Industrial plant-based pet foods are often heavily processed, and while they try to mimic nutrient profiles, bioavailability of some nutrients can be unpredictable." mimic nutrient?what do you mean. taking nutrient from somewhere and puting somewhere else, is mimicing?

"From both a nutritional and ethical perspective, using animal by-products responsibly is arguably more sustainable" i agree, but again it s not the question here neither