My goodness. I have more than a few questions about what has gone on, a ton of red flags popping up all over, I feel free to say so, and I don't feel the least bit Karmic-ly dirty. For starters, I don't equate LE with vultures.
Really? Ask Kevin Fox about that. He was thrown into jail, where HE was raped and beaten by inmates, after falsely confessing to molesting and murdering his 3 year old baby Riley. His "confession" was extracted after tens of hours of interrogation, with no lawyer and no way for him to leave the interview room.
Don't believe him? How about the families of these victims - names that I am sure you will recognize: Polly Klass, Elizabeth Smart, Jaycee Dugard, Jessica Lunsford, Shawn Devlin, Shasta and Dylan Groene. In each of these cases, the families were in the crosshairs of LE. I mention these particular cases because in EACH of them, it has been proven that the families were innocent. There are literally THOUSANDS of other cases where there simply is not enough evidence, but the family is still being harassed and stalked by LE, in some cases many years later.
The interview techniques used are the same strategy that are well documented as being psychological brainwashing techniques. Some innocent people will succumb to the techniques, some will not. But when a person is under the most severe emotional stress imaginable (such as having your CHILD missing) the brain is unreliable. There is no way to predict who will crack under the pressure and who will not. But the second someone cracks, it is all over. Once a confession (or semi--confession) is reached, it's over. Even a confession from the true killer will not always supersede the "confession" of a family member - even if the "confession" is immediately retracted.
I have no doubt that LE has good motivations. I don't believe that any of them deliberately try to pin a murder on an innocent person. But they have the same statistics that you do. MOST cases are perpetrated by family members. MOST. Not all. But when all other "reasonable" thoughts are exhausted, naturally they will re-explore the family. And it is no long leap to go from: there is no evidence that someone else did it" to "they MUST have done it".
So, feel free to think what you want. No one can stop you. But having some compassion for a grieving family until and unless they are actually proven to have harmed their child, can never be the wrong approach. And, having some healthy skepticism about LE is just self-preservation, in my opinion.