It’s not food. It’s just stuff that you can stick in your mouth.
It’s also not snobbery to point that out.
In the 1980’s McDonalds admitted in the UK courts that their burgers were up to 5% fecal matter. It didn’t stop anyone eating them. But then you get Morgan Spurlock and supersize me etc etc – and you realise it’s not food either. It’s stuff you can eat – but food, by definition, sustains you.
I could make and eat scouse for the rest of my life – lots of onions, vegetables, small amounts of meat, all in a nice stock. It would sustain me. Because that’s food.
Subway is stuff you can put in your mouth designed by “food” scientists. It can’t sustain you – in fact, in not-so-long-term it will do you damage.
Because it’s not food.
Pointing that out is not snobbery. Snobbery is pointing out that subway doesn’t stock your caviar and champagne of the required expense. This is just maintaining basic food standards and not falling for profiteers who’ll sell idiots any old cr@p that they can legally cram in their mouth, for profit.
I’m going to stick my neck out here, but that’s all complete bollocks isn’t it?
I’m fairly sure that if a quarter pounder contained 6g of shit, you’d notice, but if I’m wrong, provide a source. You’re far more likely to find faecal matter on vegetables, or anything else grown out in the open, in actual shit.
As for the rest… bullshit. If food was only food is you were able to live eating nothing else, very few things would be considered food, and your example doesn’t conform exclusively to the definition of “food”.