Vegans: … uh… now what?

Vegans consume fewer plants than anyone else. It takes a LOT of plants to raise a cow, pig, or chicken. From an economic point of view, meat is a way of refining mountains of cheap, plentiful, safe plant products into a scarce, harmful and addictive luxury product. This comes up a lot, you’d be amazed how many plants rights activists your average vegan runs into.

Unless you count grass and non-human consumables and non-potable water…sure…until then that’s bullshit.

How is that bullshit? I am not vegan, but that’s just a scientific consensus and a major reason why plant diet is way lower carbon than a meat diet. If you need to grow plant food for your animal food, eventually you have to grow way more plant food.
Most animals raised for meat consumption are fed with crops, notably soy.
Thinking animals raised for meat only consume resources (land (first cause of biodiversity loss), plants, water, energy) that would not be useful to humans anyway is undoubtedly wrong.

Researchers Poore and Nemecek are a great source of meta-analysis information about those subject. Check this summary here for example: environmath.org/…/paper-of-the-day-poore-nemecek-…

Let me know if I misunderstood your point.