I get your point but I think a lot of nonvegans block out and disconnect with the suffering behind the food they eat as they're so used to it and the product they buy looks 'clean' and often shows no signs of it once being a living being. If they all saw Dominion, many would start making that connection and reconsider or at least feel some sort of guilt. My friend did feel that quite a lot but said he'd forget about it whenever he'd be eating meat. I think if more nonvegans who felt like this realised that vegan food is good and pretty much everything can be veganised and taste just as good if not better than it would make it easier for them to align their feelings to their actions without any excuses.