No one on here is convicting him or locking him away without evidence. It is a discussion and an expression of opinions. I am seeing posts discussing possibilities and why one or another does or doesn't seem viable to various people. I've been on websleuths since 2004. You will find that most of those of us who have been on here for many years, are often pretty able to gauge what's going on in a case or at least the direction it is going. For me it is not just about experience though. It's about common sense and logic. We do know a lot. And what we don't know is important as well.
In cases such as this, we will sometimes get a sudden influx of new members who begin chastising posters about not conducting a witch hunt, being narrow minded or using tunnel vision, while also making subtle or not so subtle insinuations about the victim's mental health, criminal history, character, etc. It is an interesting pattern and does indeed sometimes constitute a defense, IMO.
We are actually having a discussion about the various possibilities. Not one person has stated that PF should be found guilty and put in prison based on what we have. (Although we did have a few demanding that PF be forced to talk to LE, or wondering why he cannot be forced to do so, which is not in keeping with American principles and law). Myself? I'm still open, but certain possibilities have become vastly dimmer for me. That does not equate to determining that PF should be convicted and sentenced without evidence.
Various opinions may seem "amazing" to some, but to others who've been following cases like this for decades, not so much.