I don't mean to diminish any of that at all, it's all worth paying attention to.
However, the majority of meat we eat today comes from factory farming, and the majority of the feed for those animals comes from... traditional crop farming. So it's not really like eating meat is ever going to result in less death. We would need to move entirely to free-grazing cattle, which frankly, I do not believe is scalable enough or cost-effective enough to meet food demand.
I know people who are not vegetarian or vegan, but who care very deeply about animal welfare, and who care a lot about where their beef/pork/chicken is sourced from. I admire that, I am not going to shame anyone for caring about anything. My own opinions about killing animals aside, at the very least ethically sourcing meat is miles better than not caring at all. But I no longer believe that's something that's feasible to expect most people to do; in a weird way I think going vegetarian is easier for many people than figuring out where their burger at a restaurant came from. And where factory farming is involved, getting rid of meat allows us to engage directly with the costs of farming and eliminate one of the extra steps (cattle) that are layered on top of that process.