Our nation's food supply chain is not equipped to feed everybody on a vegan diet tomorrow. Even if they aren't the only sources, our society is geared towards meat as the primary source of nutrients such as proteins and iron, and if all meat disappeared from the shelves it would make plant foods more scarce due to higher demand. We can't operate based on your perfect ideals, we have to operate based on reality. And the reality is that meats are an essential food in this society.
Yeah, I don't get the "This is fine because yay vegetarianism!" argument. If there's a shortage of meat and people buy tofu instead, there will be a shortage of tofu.
I agree we need to eat less meat, but this is still very bad news.