To pedantically nitpick this article is ridiculous. Anyone with experience knows the basic truth of it. In the 80's I was a pax on a trooper from Lyneham to Aldergrove and the herc was full of young squaddies on their first tour. They all kept their berets on with a large (IIRC) blue feather stuck in it and not one looked old enough to be out without a letter from his mum. The troops they were relieving were chronologically the same age but looked a lifetime older after their stag in NI.
Not everyone in an operational theatre will be similarly affected. There clearly aren't any REMFs there but there are also huge differences in individual roles and the reactions to them.
Whether this article is 100% accurate or not does not alter the fact that the psychological aftercare for HMG forces is inadequate. That is its central theme and it is entirely true.