People are well aware that the Portuguese investigation closed without the crime being identified and without the suspicions about the parents being dissipated. Despite that, Operation Grange was given one crime only to investigate; stranger abduction. It wasn't unreasonable to wonder what evidence that decision was based on.
I expect Wolters is struggling to gather the evidence he needs because there's no definitive evidence that Madeleine McCann was abducted. Everyone (Wolters, the BKA and the dodgy informants) has assumed it happened but in a court of law it needs to be shown that it happened and that the accused was involved.
Why is it so important to you that, like Amaral you really do not wish Madeleine’s case to be investigated properly if your posting history is anything to go by.
Three national police forces are investigating abduction and have been investigating a prime suspect for as many years as Amaral spent in months on botching Madeleine's case before being sacked from the job for his awfulness.
Who do you think would know more about Brueckner to share information with the authorities than his neighbours, friends, acquaintances, those who worked with him in legitimate jobs and in more nefarious enterprises such as drugs and burglary.
Not all informants will be “dodgy” as you term it. His phone number activated a mast in Luz on the night Madeleine disappeared – the PJ apparently ’ruled him out’ in 2007, and I think that is an interesting one indeed.
Quite obviously he is still very much ‘ruled in’ to the investigation and has been since 2017 when he apparently mouthed off in a pub, until now in 2021 when the police have evidence to name him as the Prime Suspect in Madeleine’s abduction.
It is my belief that investigators are checking out many more offences with which he may be associated and not just Madeleine's so the bad news for you is anguish for her parents, if it gives you solace to know that.