As if people are not "cooking" the exact same food bought from these supermarkets.
Salads being a healthy, low-calorie thing is an idiocy; it's only possible if you don't use any dressing, and at this point you are only eating crunchy water. Otherwise, the oil in the dressing is over 800 kcal per 100g. Most people will put the equivalent of 50-70g of bread just as dressing in their salad. It's mostly fat and not filing.
In other words, it's extremely dumb to think salads are healthy; only fat women believe that shit and this is exactly why they end up like this.
Salad is a stupid meal for rich people to feel superior. It's wasteful and plain stupid. And if you are actually a worker (or someone who needs to be physical), you are ingesting the wrong type of calories. But that's the whole point. It's not sustainable for a worker; thus it is a class signifier.
You are an idiot, I'm not your buddy, go fuck yourself.