Denmark has every right to protect their kids from becoming the property of US tech companies. And if this means they end up never joining Facebook/ X, etc, then it is a victory against the MAGA & fascist attitudes that those companies spread. People should not be so concerned when a state takes action against companies. When the US broke up Standard Oil it did everyone a whole heap of good. If other countries follow suit with a social media ban for under-15s I think it could be similarly transformative.
Yes, it potentially creates challenges around privacy, but for a law like this to have its intended effect doesn't entirely depend as much on age verification as people think.
The thing with a law is that its transformative effect works over a long period of time. For example, on the day when this takes effect, a heap of kids will still find a way to use these social media sites. But in a couple of years, kids won't want to, because their friends are not on there. This happens, because a few years, and perhaps a few test cases later, society as a whole deems it wrong and illegal for a kid to be on social media.
15, you say? https://www.abc.net.au/news/2025-09-25/united-nations-general-assembly-social-media-ban/105814246