First, as he notes, this happens a LOT (link, but not explicity attribution). And as he even notes, he does it himself -- and he does it regularly. The difference between him and Ina? Apparently, Ina's readers don't follow links (how does Gruber know that -- he doesn't). And as he notes, many sites do far worse -- no link, no attribution. But apparently this isn't about the crime so much as the criminal (allthingsd).
And of course he conveniently picks an Apple story to become self-righteous. I could have found hundreds of non-Apple stories over the past five years where this happened. But clearly none of them are important. Only Apple writers count?
He then goes on and claims that the correction was even wrong:
“Enthusiast site” is pejorative. Enthusiast implies that MacStories is produced by zealous hobbyists.
This is the oddest read of that term I've ever seen. When people say it is an "Apple enthusiast site", that means it is a site read by Apple enthusiasts. And MacStories is that. As is DaringFireball. Engadget is a gadget enthusiast site. Sports Illustrated is a magazine for sports enthusiasts. There's nothing pejorative about it. A "fanboi" site, sure that would be pejorative, but not this.
And Gruber, effectively put his attack dogs on Ina, and for what, for not explicitly calling out the name of this site. For a while her comments were filled with hateful attacks against her as a person, and many saying they had come from Gruber's site. They were removed, but they were the types of personal attacks you'd expect from a 1960s civil rights protest, but not because someone didn't add explicit attribution (because clearly running the story with a web link isn't enough).
One of his last lines is this, "Defensiveness is never flattering." Gruber should have considered starting with that line.