[stouset]

I really hate this perspective on food.

The vast majority of people who might have access to—or want to eat—dandelion are not malnourished and do not have vitamin deficiencies, and so adding dandelion to their diet will have zero net effect on their health. Swapping some vegetable out for dandelion will have zero net effect on their health. Replacing one doughnut with one portion of dandelion will have zero net effect on their health when compared to swapping out that doughnut for any other reasonable vegetable.

Individual foods are, generally speaking, neither healthy nor unhealthy. Diets are healthy or unhealthy.

[mikekchar]

But, if you eat healthy food, you don't have to eat as much to get your nutrients! And people are always trying to optimise it so that they don't have to eat as much food ;-)

It is funny the ideas that become popular, isn't it.

[FlyMoreRockets]

The typical American diet is sorely lacking in fresh greens especially, fruits and vegetables in general.

Consider also fresh food deserts that exist in many cities. https://en.wikipedia.org/wiki/Food_desert

Dandelions are widely available in most cities and very easy to grow, guerrilla gardening style. https://en.wikipedia.org/wiki/Guerrilla_gardening