we are so far removed from any actual argument that my characterization can’t be considered a strawman so much as “The way most people are able to interact online”.
but i’m happy to state this formally enough that i’d pass a student in my logic class:
the claim is that abstaining from factory farmed meat has a benefit for the environment. the supposed mechanism is that by refusing to buy a product, the producers will prorduce less, and therefore have lower emissions.we have evidence people abstain. we have evidence that the production increases. there is no evidence that abstaining from buying meat has ever reduced emissions.