Your question starts from an incorrect premise: You blame the technology.
The problem isn't the iPhone, or the TV, or the popular device of the day.
The problem is leaving little kids with the things unsupervised and unlimited.
Unsupervised means youthe parents aren't paying attention to the kids.
Unlimited means theythe kids sit and stare at the device for hours instead of being active.
Kids need attention to grow up to be good people.
Kids need activity to grow up to be fit (physically) people.
To be blunt:
The problem is parents ignoring yourtheir kids and letting them laze around getting fat by parking them in front of some cheap entertainment.