A little meta and maybe a nitpick, but "food" doesn't need a content warning label. It's dead animals or their secretions (meat/dairy) only that need the content warning. Whether intended or not, it comes across as being rather snarky or disdainful about the rule here to warn about "food" when food is not the not the problem. It would be like if there were slurs or casual ableism in a screenshot image but the content warning for it was "[CW: Human Interaction]"