Jezel, I can't find that information on the site -can you link? (About Madeleine McCann).
I don't find the site in general at all "tons of disinformation". That being said, I don't see any relation to Madeleine McCann, but I have two prime suspects in that case. I did a pretty good deep dive on it years ago, and came to the conclusion that Maddie died in the apartment and those chiefly responsible will never be held accountable. It was simply covered up.
Regarding Amy B., I don't really see what is not credible on the website: It's just a compilation of information regarding her disappearance, and the body of information doesn't really change, certainly there isn't a bunch of conflicting information. If Amy was kidnapped and trafficked, it's about what I'd think. As far as Alfred Cotton, he and a few others were knee deep in operating "adult vacations" in the Caribbean. It is what it is. One can dismiss him as a "bigger bearded guy who runs a brothel in the Caribbean", but I find that somewhat disingenuous. He's quite similar in looks to the sketch, and he didn't run some obscure brothel in the Caribbean. From the looks of it, he was quite involved in adult vacations -not brothels- all over the Caribbean, much of it on boats. From what I've seen, he looks to be very much a trafficker.