Because an active-duty officer refusing to be deployed to a combat zone is a different kettle of fish than a non-com optometrist who was on leave pending a psych discharge in a couple of days.
You don't know about the nature or the complete facts to SSgt Moran's discharge or how it it will be officially characterized.
To expand on my post @ 69 to you.
The Gooberment via, voluntary separation, could discharge SSgt Moran for government convenience as a “conscious objector.”
or
Involuntary separate him for the “convenience of the government” for numerous reasons that could come to their minds.
How about in the interest of national security [Obama security to protect his usurpation!] as one of many official reasons.