I can't speak for the author's palate in the NYT article, but it would be folly to say the Charles Shaw Cabernet is not a drinkable wine. Sure, Charles Shaw is not a first cru Bordeaux, but people aren't buying this wine up in incredible quantities exclusively because of it's price.
If that we're the case, there'd be a huge run on Mad Dog 20/20 beyond the homeless/college set. It's truly a decent drinkable wine, as are most of the Shaws.
So this leads me to wonder about the other wines from the article and whether or not there's a bit of an underlying falllacy that the wines cooked with in the article aren't good just because of price point, reputation or Moskin's subjective palate. The article would be more compelling to me, if she had other tasters verify at the outset that the wines to be tested were universally deemed bad.
I.E, the ultimate conclusion of the article is more likely that cheap wines or slightly unbalanced wines are fine for cooking, which is a lot different conclusion than "cheap undrinkable swill is fine for cooking".