i think there is something to this, it's about being able to relate to the animal more, making it more digusting. At some point also lactobacillaceae are living beings, is it unethical to eat bread then? Plants also have a level of intelligence. To me these living beings are so far removed from us that it's ok to eat them, mammals are much closer to us, we can empathize with them much more than a fish for instance.
The animals we eat can play fetch, go look up cows. We think chickens are brainless. I don't think a single one of them likes being raised at mass scale in the way we do it. Few can look at it, but so many can debate down to the atom of whether we should stop eating literal matter. I'm not trying to be aggressive specifically towards you, I'm just trying to disturb a lurkers mind that thinks in this way.
No one is going to look at the factory farm videos today, but they will talk their ass off about this topic. I hope everyone makes the pilgrimage to Youtube at the very least to see it every once in awhile.