Crimes like "it is illegal to drive and use a mobile device" and "it is illegal to drive while intoxicated" are meant to be preventative. You are committing a crime merely by creating the risk that something bad could happen.
But where does it stop? If, hypothetically, children raised by a single mother are more likely to commit violent crimes, then it ought to be illegal to be a single mother. That sort of law, which seems crazy, seems to be along the same thought process of why you shouldn't use your cell phone while driving.
Because it comes down to balancing rights, and determining which ones are absolute, and how we weight other rights in relation to each other.
So the right to a family life (to use the EU term) is held to be very important, and thus the bar to sterilisation/removing children is really high. The right to use a phone whilst driving on a publicly maintained road is not. Especially as the public's right not to have a 1 ton+ vehicle travelling at speed driving in an impaired fashion is quite important.
Plus it is about mitigating harms. Handsfree kits are allowed for example.
The exact thing happens in this case. His right to be silent or have a lawyer present is not infringed. His right to be informed whilst being asked questions relating to public safety about future threats is being infringed, because society shouldn't have to choose between future potential victims and prosecuting an individual for crimes already committed.
But where does it stop? If, hypothetically, children raised by a single mother are more likely to commit violent crimes, then it ought to be illegal to be a single mother. That sort of law, which seems crazy, seems to be along the same thought process of why you shouldn't use your cell phone while driving.