Idk much about moral philosophy, but I feel like just employing the dialectic method would be enough for Marxists to recognize the inevitability of animal liberation. Humans and animals are contradictions, but life, including animal life, will outlive humanity. The question is if humanity will prolong its existence by not practicing animal agriculture or will we continue to destroy the environment and our own health with animal agriculture. This might lend itself to a more "plant based" tendency than a vegan or animal liberationist one, but they result in basically the same thing.
Idk much about moral philosophy, but I feel like just employing the dialectic method would be enough for Marxists to recognize the inevitability of animal liberation. Humans and animals are contradictions, but life, including animal life, will outlive humanity. The question is if humanity will prolong its existence by not practicing animal agriculture or will we continue to destroy the environment and our own health with animal agriculture. This might lend itself to a more "plant based" tendency than a vegan or animal liberationist one, but they result in basically the same thing.