I think what Shiner did deserved to be demonised/criticised. Not only did it drag soldiers who had done nothing through a hellish process, it also poisoned the well a bit as far as prosecuting actual real war crimes that did happen. Like stirring up a pond with a stick. It gets so murky it's harder to see what's actually there.
My assumption would be that the right wing press are suddenly interested in the whole mess now though because it's an attempt to deflect from what Trump said about other NATO soldiers and from the very anaemic response to that from the likes of Farage.