In the US, children's right to free speech has only very narrow exceptions compared to an adult.

The Supreme Court has even struck down state bans on selling violent video games to children because it violates a child's first amendment rights.

A full ban on social media full of protected speech? That passing Constitutional muster would require some legal gymnastics and overwhelming scientific evidence of harm - evidence that is sorely lacking despite what people believe.

> That passing Constitutional muster would require some legal gymnastics

In the previous era of principles, sure. In The Year of Our Dear Leader, 2025? The Republican Supreme Court just needs the order from above, and the Constitution will say what the ruler says it says.