I don't have a huge problem with combat injuries being treated differently than non-combat injuries. But the article is suggesting that the Pentagon is seeking to classify injuries as non-combat related just to save money:
A Marine getting blown up by an IED is pretty clearly combat related. Yeah, he won on appeal, but he should never have had to go through that process. Lori Meshell's case is not quite as clear cut, but at the end of the day she was injured as a result of her actions during a mortar attack and it just looks like nit-picking on someones part. It's not as if either of these two was hurt falling down the stairs on the way to the chow hall.
Hopefully this article is exaggerating to make a point, and these two cases are fairly isolated, but it's still two too many imho.