It's political because the people pushing for it usually are conservatives who don't like the modern ways of life and/or education. It's questionable whether they actually want to help the society or just force people into their own ways. They might even think they're helping, but actually do the opposite.

Researchers often do research based on their world view. Did these people also try to research what happens if they integrate the technology into education and teach children about the possible dangers of it, or did they focus on just whatever could confirm their world view?

The Establishment wants to be the only channel into young minds, that way theirs is the only ideology to get into their minds.. with phones and social media, young people can get other ideas, Ideas that the establishment considers the wrong ideas

Independent of any judgement of the particular research at hand: everything about this is political. Lots of people, in particular parents but also others, dislike and fear that young people are losing their life on "screens", i.e. mostly smartphones, gaming.

Note the "dislike and fear", which is fully subjective and fundamentally not based on evidence. This is regardless of whether there actually is data to support this position; the fear exists nonetheless, and data can only back it up or contradict their intuition.

Most politicians have children, and most of the voting body has children.

This is very much a politically charged issue.