No it shouldn't. NSA has more than one goal. Their goal is to secure USG communication and to break everyone else's. While an argument that in the recent years

No it shouldn't. NSA has more than one goal. Their goal is to secure USG communication and to break everyone else's. While an argument that in the recent years the pendulum has gone way out into subverting is valid this has not always been the case. They just cannot make USG secure without giving some of that security to everyone. And they cannot weaken everyone's security without endangering themselves. Of course for now US doesn't have global adversary (that they know of). But with the world moving from sole superpower towards multiple power center this may not be the case for long. And then it will swing in the other direction again. Just wait for an real cyber attack through one of their backdoors to happen and then you will have them working full steam ahead towards security. Btw - one of the other things about the extremely potent NSA that are not mentioned at all - if you are a smart adversary then you should just infiltrate NSA and let them do the heavy lifting and have the needed information for the cheap.