> All nukes are meant to be set as airburst, it increases their effectiveness significantly

This is not quite right. It depends on the target you are trying to destroy. An airburst is good for maximizing the distance of medium or low levels of damage. A ground burst is for maximizing the intensity of the damage at the expense of range.

So if your nuke is aimed at a "soft" target like a city, an airburst makes more sense. If it is aimed at a "hard" target like a missile silo, you need to use a ground burst.