I understand that, and I understand the overall personal health and societal benefits of reducing meat consumption. I proposed an upcoming alternative that wouldn't require nearly any plant consumption, still all the power to you for making conscious decisions to reduce the environmental impact of meeting your needs if you practice veganism. Though for this post, what I'm doing here is applying the idea of moral circle expansion to demonstrate that people have different benchmarks to what they care about, which can be just humans, humans and animals, or also including plants and other organisms, to show that OP's assertion that veganism = leftism is an incorrect blanket statement.