Defence forces can be picky, they don't neccesarily need to expose themselfs to unnneccery risk if most of the soldier value comes out of training rather than inborn talent.

Being very earger to soldier is a trait that speaks quite a lot against whether it would be a good idea to make a soldier out of this particular individual.

Militaries are very unflexible when it comes to accomodating psychologies that are non-standard.

Most people would benefit from better mental health services. Being concerned that you are/might be crazy is a mark of sanity. Conversly dogmatically thinking you don't need more sanity is a worrying sign of no active maintenance. Like a building that isn't inspected because we have no reason to assume it could be rumbling down. Rather we constantly check buildings that we get the knowledge of fractures when investigating rather than only when the building comes tumbling down.