That they exempt politicians is basically admitting that the security problems that detractors bring up is true, and is something that should be used against them.
After all exempting some police, that work on investigating child molesting, from the scanning, that is understandable.
Exempting prime minster Mette Frederiksen, on the other hand. Means either that they understand that it undermines security, or that she or some other top politicians are child molester. So which is it?