Addiction to technology is no joke and it starts young. Research has already shown that exposing infants and toddlers to tablets and smartphones at a very young age will change the wiring of the brain.
The images and fast animation may cause attention issues later. And if the adults use these gadgets as a baby sitter most of the time, it will affect the child's communication and social skills. Young children need two way communication to develop language and social skills. When we talk f2f, we use gestures, tone, facial and body language to communicate and all these are important in developing language and social skills.
Long term, unsupervised usage of tech gadgets can lead to addiction, akin to drug addiction.
My spouse used to work as a school counsellor, he had seen many cases of teens with tech addiction. The teens will refuse to go to school and hit their parents when the parents attempt to remove the gadgets. And it all started from young. By the time they reach puberty, the brain has been addicted.
So it is no laughing matter. The founders who invented these gadgets don't allow their own children to use them unsupervised. These gadgets are worse than the olden days TV because we can bring them along wherever we go!
Many countries have started looking into this modern day issue because of the severe repercussions on society. It is difficult to ban them altogether for kids and teens due to the implementation issue, hence govt can only give guidelines and hope the more enlightened parents will take these guidelines seriously.