What's interesting to me is that the bit game theory that is supposed to make such an attack unprofitable seems not to be holding here. Supposedly the idea that the blockchain was insecure would devalue the coin to such a degree as to disincentive people from attempting these sorts of attacks. I see virtually no movement in the price of BTG and relatively little in XVG (also attacked this week). If anything, the fact that the chain's integrity can be compromised and nothing happens appears to undermine a core assumption of Nakamoto consensus.