It doesn't matter. The point of that story is, the weak link is going to be exploited. Bitcoinica is a good example. Zhoutong said at the start he understand

It doesn't matter. The point of that story is, the weak link is going to be exploited. Bitcoinica is a good example. Zhoutong said at the start he understands application security, and in fact the big attacks didn't result from exploits in his code, but from third-party vulnerabilities.