Why do advertised features often hide crap?

I’m struck by the fact that, very often, the features that are advertised as a product’s killer assets are just lies hiding the fact that the product is crap.

An equal amount of skepticism takes over me when I see today’s oh-so-hype “green” concepts and products.

I think we should all do a better job at taking how things are “sold” to us with shiny names with a grain of salt.