First of all, that analysis you posted is not particularly scientific, and there’s an abundance of evidence that vegan diets hurt cats.

Second, once you’re getting into arguments about “synthetic nutrients”, it’s pretty clear that you don’t actually know how animals nutrition works, and probably shouldn’t have a pet at all if you don’t know how to keep one without making it suffer due to malnutrition.

Not sure why you’re vegan, but it certainly isn’t because you care about the well-being of animals…