To me, the real lede is buried pretty deeply in the article. The light on that particular photo IS anomalous. It sounds as if the conspiracy theorists were right about that, and that's kind of astute.
What's interesting is the resolution of the anomaly: it's light reflected off Neil Armstrong himself. Or rather, his large, bright-white suit. The NVidia guys showed that it reflects enough light to account for the lighting in the picture. If you don't include it, the lighting is off. I think that's pretty cool.
This doesn't, of course, settle anything for the conspiracy nuts, and I fully expect this to prove only that the NASA guys were wily bastards. And that sucks, because it sounds as if the brain power they're applying might well have turned up something more interesting if it weren't fixated on achieving a delusional result.