Disorders were made when studying the subject of people with psychological problems -- their focus is based around this

Socionics was made when trying to create a psychological model of society -- their focus is based around this.

Obviously Socionics is way to general to address the pertinant topic.

However my main point was not this, it was that you can't take your general "sense" of a healthy type and use this as an analogy to help type an unhealthy type. Like feelers that are healthy are always positive, friendly, nice, warm, compassionate, noble, and caring. While feeler that are unhealthy are angstful, resentful, hateful, rigid value systems, paranoid, and depressed. Some people seem not to understand this polar relation and will use the general sense of a feeler being friendly to label thinkers as mean people or at least people that aren't friendly. In this case I think the person used an analogy of a healthy ENTp to place the unhealthy types of the shooters as ENTp, while the logic is just as flawed as the above example.