I think this is probably the best case to point out the reason for avoiding backdoors in the system. The author put it more eloquently...

  The problem with cryptographic backdoors is not that they're the only way that
  an attacker can break intro our cryptographic systems. It's merely that _they're
  one of the best_. They take care of the hard work, the laying of plumbing and
  electrical wiring, so attackers can simply walk in and change the drapes.