IMO this is a good thing. The DMCA is about criminalizing competition more than copy protection. DeCSS, for example, doesn't affect copying, because DVD encryption is still applicable regardless of the copy of the physical media. What DeCSS did do, and what it has in common with this Apple situation, is break an artificial monopoly. This case is good because it contributes to evidence that the DMCA is mainly used to block free and fair competition in the market.