Nothing about advocating for the ethical treatment of animals is daft. In fact, it's one of the most rational, compassionate positions we can take. If one chooses to eat meat or animal byproducts, then yes, it should absolutely be ethically sourced. As for B12—I'll gladly take a supplement if it means fewer living beings suffer and our environment faces less destruction. The minor inconvenience of taking a supplement seems trivial compared to the massive impact of animal abuse and factory farming.