People are going apeshit over Gowdy for nothing.
He was basically saying, that generally speaking, the FBI should use informants and follow leads. This is what we expect them to do, within normal operating parameters.
BUT… absent all the facts of this matter, he obviously can't speak for exactly this situation…YET.
He's establishing that he's a neutral player.
It leaves the door open for him to examine the evidence AND THEN find they acted FAR OUTSIDE the normal parameters.
So stop freaking out about this.