Asking carnists to confront their own inconsistency is probably one of the oldest vegan arguments.

Like watching self-proclaimed "animal lovers" go on and on about how much they love bacon. Point out that the bacon is an animal with basically the same emotional and cognizant status as their dog and they get pretty upset. It's the inconsistency that drives this response and it's these agitations that lead to personal action.

Same thing applies to political agitation btw. We make agitprop intended to play on personal moral consistency like not wanting babies to get bombed, like thinking of themselves as non-racist, like "a full time job should be enough", etc.

There are many people out there who would not slaughter their own food because they don't want to harm the animals. There is an easy solution to this: make minor lifestyle changes. What prevents it is the decontextualization that prevents them from setting a red slab as an animal, the disconnect between primary production and their consumption, and a series of reactionary thought patterns that are reinforced by lefties just as much as, if not more than, their liberal counterparts.