Quite so. However, scientists are trained to look at things objectively, not to fall victim to their emotions, to weigh the evidence carefully and form conclusions. Non scientific people in general don’t have such training. A shooting spree would be totally illogical, totally counterproductive if one applies scientific method to it.
And that is why one hardly sees any shooters with scientific background. And that is why when one occasionally comes across an academic (especially a female) who goes on a shooting spree, it is an occasion for surprise and disbelief.