But it isn't only the McCanns who claim abduction - the Tapas 7 also do.
The idea that those people would risk the ruination of their own children's lives and put their own freedom in danger for a couple who some were not even friends with - let alone close friends - is way too far fetched for me. Normal decent people would never agree to get involved in such a heinous crime - and they are all normal decent people IMO.
I wouldn't do it and I don't know anyone who would in those circumstances - and I will never believe that Fiona Payne would encourage her own elderly mum to commit any crime - let alone one so serious that it could have resulted in her being arrested in a foreign country and being charged with attempting to pervert the course of justice! Not a chance in hell of her agreeing to put her at that risk IMO.
There was nothing to stop the PJ from investigating anything or anyone they wanted to - they were in charge. The reason they failed IMO is because there were no official guidelines for them to follow and because they took the investigation in the wrong direction once they decided to pin the crime on the mother - on the strength of a dream she'd had.
With the exception of Jane Tanner the Tapas 7 have never publicly claimed anything. Jane Tanner apparently saw another holidaymaker with his child and assumed she had seen an abductor taking Madeleine. While Gerry McCann was phoning his relatives talking about paedophile gangs his three male companions were out scouring the village for his daughter.
It is unprecedented for not just the British Consul (whose job it is) but the British Ambassador (whose job it is not) to attend as quickly as they did. It has been alleged that they interfered in the investigation. By the time the PJ had finished all the interviews they were being showered with information and sightings due to appeals in the UK media. The PJ doing the actual work were not in charge; Encarnacao, Neves and the Public Prosecutors were.
If you think the PJ suspected Kate McCann because she had a dream you need to read up on the subject.