There is a plethora of internet opinion designed to throw any indication of Madeleine McCann's survival into disrepute.
Why should that be?
Quite obviously if Madeleine is a kidnap survivor there are those who have a vested interest in keeping it that way.
Certainly, in the absence of proof of Amaral's assertion of her death ... the proper course of action is to look for proof of life.
There are many walled and gated estates in Portugal where she could well be living her life in full sight. As we know, the flaw in her eye is not unique to her and in a country where a great deal of effort has been expended to ensure the theory of her death is deeply embedded in the psyche ... who is going to remark on it anyway?
There are many walled and gated estates in Luz where Madeleine could be, but not in plain sight, rather in total secrecy.
One issue however is people who enter the plot regularly for a variety of reasons. We have a pool cleaner, a gardener, a house cleaner, repair men, family and friends, the occasional GNR visit, the occasional bombeiros visit, delivery of gas cylinders, installation of electrical circuits etc. and nowhere to hide a child when these turn up.
Then there are Madeleine's needs - a doctor, a dentist, an optician, schooling, and her access to news sources such as TV and Internet. I won't try to itemise the lot.
From these considerations and more, I am fairly confident, though not certain, that Madeleine is not being kept in the near vicinity. There is just too much Madeleine-related activity around here to make that believable.