The problem is, as you describe, poor resource and logistics management. Not what we actually eat. But you don’t care about that. You have a quasi, religious viewpoint, and you hate everyone who disagrees with you just because they disagree with you.

I’m sorry, you’re religious food fanaticism has blinded you to more rational options for dealing with greenhouse gases and animal cruelty. Your black-and-white approach is, clearly, not convincing me enough people to make a difference. So maybe you should focus on something that will make an actual difference: stop being a domineering, asshole, and lecturing people on how they should live their lives.