No, that's not what he is saying at all. With the maddening amount of resources ($80 billion for fuck's sake) spent on surveillance of both foreign and domestic communications, incidents where the agencies have the resources and intelligence to stop attacks but don't/can't shows that no amount of money spent or rights lost will give us absolute safety.
When you point out the failures of the NSA to stop specific instances of terrorism, it only suggests that they need more resources and legal surveillance. The reasons for wanting the NSA surveillance to stop have to be that the innumerable injustices suffered by citizens under a surveillance state would be worse than the occasional extremist attack that would be preventable under such surveillance.