It's been awhile since I read through this literature, so I'm not an expert and things might have changed. However, with face neurons at least there was always

It's been awhile since I read through this literature, so I'm not an expert and things might have changed. However, with face neurons at least there was always an argument about the extent to which the neurons were specific to faces versus extremely motivationally significant stimuli that required individual recognition. I vaguely remember there being studies showing that if you showed people something that was very emotionally significant to them, and that they were expert in discriminating between exemplars (for example, many similar but different models of vintage cars to a vintage car enthusiast), similar neural populations would be recruited. The argument was that faces just happened to be something that tend to be really emotionally salient to most people, and that people have to differentiate between large numbers of exemplars of. Maybe that interpretation has been disproven now, or maybe it doesn't quite apply, but I wonder if it's really food or something else. Or if maybe at some level the neurons are responding to something so similar to "food" as a category the distinction is moot.