I don't object to anyone making a choice to be vegetarian or vegan or to be omnivorous. It's natural for some animals to be obligate carnivores, cats for example, and for some to be totally herbivorous. Humans evolved to be omnivores but we can exercise choice.
What I find hypocritical is when people criticise or mock others' choices but object to being criticised or mocked for their own choices. That applies to meat eaters and vegans alike. It's juvenile to comment with "Eew!" or, "Meat is dead and rotting!" or, " Get a good steak into you!" when looking at someone else's plate or shopping basket or to describe their food choices in any emotive terms.
Most of the foods we eat are dead (and therefore, one assumes, decaying) apart from whole grains and seeds or possibly very fresh roots, which can go on to produce new plants and seeds if we don't uproot and eat them. Most leaves and fruits are certainly not viable, nor are processed legumes like split peas and red lentils. Therefore, they are dead. Flour is definitely dead. Plants often protect themselves from predation by being poisonous or growing thorns and spines. We have learned to cook poisonous things like red kidney beans by vigorous boiling. That certainly kills them.