NO, in many of these cases, the individual in question was specifically NOT actively or passively seeking a hookup with a child.
The key words are "in *many of these cases", which tells us that it IS the case in some instances. If there is any type of indication that a child molester/porn seeker is looking for a hookup, they have to follow up on it.
The same thing applies to CPS. Child Protection Services gets a call that a child is being abused they have to check it out. "In Many of these cases" they know it's some dirt-bag friend calling CPS as a revenge tactic but they still have to follow up.