Anxiety disorders are considered minor mental illnesses because for the most part, they’re not crazy at all. Also it’s pretty much run of the mill stuff that a lot of totally functional people have, and many of these people appear quite normal if you meet them.
Also they are quite harmless due to fear being omnipresent in all of these and the disorders striking at introverted, guilty, etc. types. I would also argue that fear is a “freezing agent” for action. It seems to propel you backwards and make you stay in place, causing inertia. It stops you from moving forwards. There are times when I feel frozen in my chair with a huge weight-like a force forcing me back into it so hard, it’s hard to get out of the chair.
Energy either goes forwards or backwards, into the self or out at others.
With all that fear energy going backwards inside the self, along with the fact that anger’s not usually combined with it, it simply freezes the person in place, and there’s no more energy left to project outwards towards other persons as aggression and violence. I suppose you could argue that fear is aggression directed inwards and aggression is fear projected outwards. This is why people with anxiety disorders and introverts have such low rates of violence. The extreme energy propelling the life forces backwards into the person leaves no energy left over to propel outwards at others as violence.
In other words, they couldn’t commit an act of violence if they tried! Something would stop them and they would say, “I don’t have this in me.”