They are training pilots for the Army. For the job that the Army needs them to do. Not for their follow-on civilian careers.
The basic piston engine skills you're referring to would be "nice," but I'm sure the Army has run the numbers and the training time required to teach skills with little to no relevance in their current fleet doesn't make sense. They did a similar thing with autorotations beyond primary some years back. The need for touchdown skills was so rare that the wear & tear and additional training required didn't make sense. So, the Army says, "So we lose a crew once in awhile. And?"
So, recent Army pilots transitioning to the civilian world will probably need some remedial flight training to fill those gaps. Oh well. I'm sure you can teach them.