I suppose the main point Chris emphasized is that given on some fundamental points that have guided the theoretical philosophy and coding of the project - these types of attacks will inevitably continue... bugs may get fixed as they come up - but there will always be another around the corner, and who knows how grave the consequences could be at some point...

Though on the flipside - perhaps such kinks are a natural part of the development process, and what will determine the long-term outcome is how the approach evolves over time...

Frankly, I don't have the technical expertise to pose any conclusive stance, though I definitely see the potential of Ethereum - IF the security factor is tight...