I think it depends how much you buy into CW. I already didn't eat at chain restaurants, and while I loved the occasional sandwich/po' boy/hero/sub, pizza, and lasagna at Christmas, I never deluded myself that those foods were good for me. I didn't eat a lot of legumes, but it was mostly because they are a lot of calories for very little nutrients. I didn't know that grains and legumes were actually bad for me. Just that they weren't particularly good for me.
People who grew up living on prepared foods or fast foods probably don't know what good food tastes like. But I'm fairly old, and my perspective is different. There are people here whose parents cooked nutritious, if SAD meals, and their perspective is different from those whose parents thought a big night out was eating at TGIFs.
I think this is one instance where people who live in larger, more trendy cities win out a bit. When you look at the posts of people who have problems finding grass fed meats, etc., they are generally from smaller states and cities. (Smaller as in population, not area.) For eg., though I can find almost everything I need locally or online, cowshares in my area are far away, and barely justify the gasoline to go get them.
So, I agree with you. SAD is boring. Vegetable oils, cereal, and boneless, skinless chicken breasts are sad faire indeed.