I agree with your general point, but water usage numbers for farming animals are notorious for being exaggerated. There are studies that take all of the rainfall multiplied by all of the grazing land the cows are allowed on and include that as “water used”.

Water usage is also a nuanced concept because water isn’t destroyed when we use it. You have to consider the source and incidentals of processing it, as well as what alternatives it’s taking away from. None of this fits into convenient quotes though.

I think energy usage is a much better metric because we can quantify the impacts of energy usage by considering the blended sum of the sources going into the grid.