Agreed.
The problem here is not the smartphone per se, but our increasing dependence on it and the "outsourcing" of our thinking and desires to our smartphone.
Imagine the follow scenario:
* Need to get to a place? Just ask Google Maps, no need to think.
* Need to decide what and where to eat? Don't need to think, just use an app that optimizes for health/variety/preferences/budget and you don't even need to leave the house, just it delivered right to your doorstep.
* Need to think deeply about something? Just Google for the right articles. No need to waste time thinking.
* Feeling bored? Just consume a game, song, movie, Reddit/Facebook/Instagram/Twitter/etc.
* Don't know what to do next week? Have an app that auto-suggests what you can do based on your preferences, your friends' schedules, activities in your city, past user ratings for an event, etc. Taking this further, have an AI virtual assistant that plans your entire year's activities.
* Need to date someone? Use an AI virtual assistant (built with the latest in Natural Language Processing and AI technology that optimizes for the right words to use, the correct responses, the best times to send a message, the best jokes to be using, the best emotions to elicit) that has already done all the swiping on Tinder/OKCupid and done all the texting conversations to set you up on a date.
When this point in the future arrives, without a smartphone, you would become almost feel like an empty shell (or even suicidal). Your very existence becomes tied in to the smartphone. Your daily whims/desires becomes dependent on the smartphone.
If you were given a life sentence: give up an arm or a leg, or give up the right to own or use a smartphone for life. I think increasingly in time, people would rather give up an arm or a leg than give up a smartphone for life.
The question then becomes: Do you own a smartphone, or does the smartphone own you?