I totally get it but, and I had this mild disagreement with my wife recently, what if I'm on duolingo learning Spanish? What if I'm checking my investments or making a trade? What if I'm texting with a friend who just lost a loved one? You can't make assumptions about what people are doing on their phones all the time. I spend too much time on my phone, but a lot of it is useful and productive. With that said, I'm firmly in the "I need to stop doing the unproductive things that I do on my phone" camp.
I'm all for raising the awareness about how dangerous any addiction can be, but comparing amphetamines and alcohol to using a smartphone is a bit far-fetched.
There are many things you can do with a smartphone, many uses are bad, but some are good. I'm in the same case as the post you replied to. I use my smartphone to review flashcards and read books when I commute, and I don't see any better way to use my time.
