Based on prices, rig counts and production levels, shenanigans with future hedging and land leaves, and internal emails contradicting the official optimism, the article and its sources make a pretty good case that the current boom is a bubble. However, IMO that doesn't exclude the possibility that there could be another boom (bubble) fuelled by foreign investors willing to pay higher prices in long-term agreements. The key issue then is, it appears to me, that of depletion rates: if it is exponential on the long term like critics claim, it will be another short bubble; if depletion flattens out over a period of decades like advocates claim, then the price will decide.

By the way, the New York Times article with the internal memos is here (the article at The Automatic Earth only links to the document viewer itself).

_{*Lunatic*, n.
One whose delusions are out of fashion.}