Hear me out. There's nothing innate to an object that makes it "food". It's an attribute we give to certain things that meet certain qualities, i.e. being digestible, nutritious, perhaps tasty or satisfying in some way, etc. We could really ingest just about anything, but we call the stuff that's edible "food". Does that make it a social construct?
I'm just waiting for some dipshit to wander in here and talk about how we need to "examine the relationship" with food and start calling it something like "people fuel" or some other bullshit term.