It's not Gonçalo's thesis, it's the Public Ministry thesis. The lack of full proof evidence was the reason why it had to be archived and no charges made.
Portugal doesn't use jury trials (only exceptionally if require by the accused), and before a case is put to trial all the evidence has to be consistent.
Which doesn't mean that an archived case cannot be resurrected and put to trial in the future with further investigation.
In fact that's we are watching now.
Now you are simply making things up.
It was one of the options which was outlined as a possibility in the archival report.
But Amaral went much further than the archival report.
He claimed the death of Madeleine as definite fact in his book. The AG very clearly did not.
Amaral claimed definitively that the parents were involved in a criminal action. The AG very clearly stated that there was no evidence of any crime by the McCanns.
How you can possibly post that nonsense that the AG report and the Book by Amaral share the same thesis is quite baffling. Are you biased or something?
As for archived cases, we know all that, this one has been re-opened without the McCanns as suspects because there is no evidence against them and there is new evidence pointing to abduction.