Fire kills, and fire cooks. Fire isn’t addictive.
If a person would be busy with fire a whole day, they would need help from a therapist, as its user is clearly unwell. If one uses fire dangerously, they shouldn’t be allowed to use fire at all.
What a person must do with the internet is create walls and fences to insure it’s used wisely and not overused. Otherwise, it’s better not to use it at all.
Knives are dangerous weapons, and useful. If someone is in the habit of cutting themselves with it, it should be under lock and key.
There is no comparison between the internet and other items that help us but are potentially dangerous.