The Root of the Problem

Is that psychs cannot stop themselves from naming and defining everything.

'I'm a monster': Veterans 'alone' in their guilt

With American troops at war for more than a decade, there's been an unprecedented number of studies into war zone psychology and an evolving understanding of post-traumatic stress disorder. Clinicians suspect some troops are suffering from what they call "moral injuries" — wounds from having done something, or failed to stop something, that violates their moral code.
Though there may be some overlap in symptoms, moral injuries aren't what most people think of as PTSD, the nightmares and flashbacks of terrifying, life-threatening combat events. A moral injury tortures the conscience; symptoms include deep shame, guilt and rage. It's not a medical problem, and it's unclear how to treat it, says retired Col. Elspeth Ritchie, former psychiatry consultant to the Army surgeon general.

What do you mean this isn't a medical problem?
This is OBSESSION.   Ruminating on anything is a sign of OCD. 
Why must you sub-sub-sub-classify it as "Moral Injury"?
Because you really truly believe the pathology is triggered by the event...so they can't be sick if they haven't been "traumatized".

This is an illness.  The object of the obsession is irrelevant.  
When the illness flares up you become obsessed with whatever you are doing.

Video games.  Boyfriends. Girlfriends. Work. Shopping.  Zombies.  My neighbor Joan is clearly obsessed with gardening...

It's the disproportionate feeling of importance and the inability to stop that's pathological.
And there are already a few "medical problems" known to cause that.

The reason people are sick is because ever since Freud- psychs have been allowed to pull "inner conflict" nonsense like this out of their ass and be taken seriously.