Shopping:
Your points are good and valid. Not everyone needs a smartphone, and those who don’t are undeniably better off without one. There are numerous avenues for entertainment that are so much healthier and safer, as well as less addictive.
Having said this, we must return to reality. Today’s communication often requires the kind of instant access that is possible only with technology. If someone needs to have email access, or connection to personal and company schedules, these resources can be critical.
I note your parallel to drugs and alcohol. While different in nature, there are several common aspects, as you noted that there is limited and proper use. When any of these becomes recreational in its purpose, problems begin.