The existence of science does not obligate us to either receive a double-blind study of massive statistical significance on the exact question we're thinking about or to throw our hands up in total ignorance and sit in a corner crying about the lack of a scientific study.

It is perfectly rational to rely on experience for what screens do to children when that's all we have. You operate on that standard all the time. I know that, because you have no choice. There are plenty of choices you must make without a "data" to back you up on.

Moreover, there is plenty of data on this topic and if there is any study out there that even remotely supports the idea that it's all just hunky-dory for kids to be exposed to arbitrary amounts of "screen time" and parents are just silly for being worried about what it may be doing to their children, I sure haven't seen it go by. (I don't love the vagueness of the term "screen time" but for this discussion it'll do... anyone who wants to complain about it in a reply be my guest but be aware I don't really like it either.)

"Politicians" didn't even begin to enter into my decisions and I doubt it did for very many people either. This is one of the cases where the politicians are just jumping in front of an existing parade and claiming to be the leaders. But they aren't, and the parade isn't following them.