Most people on this site know military usage is a lot different from commercial.
Military aircraft usually do a few hundred hours/yr, commercial operators schedule a few thousand for jetliners.
So it is eminently reasonable for military operators to keep using the 225, it is a very good performer, it has a well established support structure and it is very reliable, plus it is available at a good price currently.
The fatigue issues that dog commercial operators are unlikely to be of concern to the military buyer. The revised overhaul life AH offers is about 10 years service for the military. That means it is unlikely to drive the economics for the military.