A smartphone can be a really poor replacement for a feature phone.
The premise of the article - not the content, is absurd. If you prefer feature phones, this won't change your mind. For instance, my 80 something year old mother has no interest in ANY of the apps you find on a smartphone - not even a picture gallery. She just wants a cell phone that flips open, is comfortable and easy to use, and performs well when needed. That this phone packs in decent technology for a fairly low price means nothing to her.
I like the abilities of my fairly expensive Moto smartphone, except for the really poor performance when wifi is enabled. But I hate making phone calls on it. Can't hear well, uncomfortable to hold, bulky, and relatively heavy. I have and use the smartphone because I need the apps and communications. If you don't need them, a flip / feature phone may be a much better choice!