Exception from desing rules - area of effect red circles only

[Silvaren]

Why some high level spells like Minoletta's Missile Salvo, Meteor Shower, Storm of Holy Fire have only red AoE circle? It's against basic design of Intellect, which incrases radius of AoE abilities with the yellow cricle which won't harm friendly targets.

 

In Pillars game mechanics come first. It can be seen in attributes' design. Like old arguments about "why Might boost damage of spell and my mage is beefy?". So I won't buy any explenation like for example "Meteor Schower is such destrictive force that no one can evade it". It still can miss. So why only red circle while Fireballs, Chill Fog and more have red+yellow circles thanks to high Int?