The thing here is GA is often mocked ridiculed
But we will never know what he would have achieved if he had been allowed to do his job as the investigating officer.
So many hurdles were put in front of him to actually do that job properly. to much interference from uk
"The McCanns knew that I was going to catch them", 20 October 2008
GA - Believe me, I feel no rage, I'm not even angry. I have understood their game and you also know how this game works. The lies about me, the manipulation is not exactly against the citizen Gonçalo Amaral. They were against the investigator who knew their weaknesses and was going to catch them sooner or later. It was all a matter of time. The McCanns knew that I was going to get them. As you could see, all it took was for the process to be archived in order for everything to be finished. At this moment in time, I'm convinced that they don't even remember my name anymore. So the game is always the same. We want to catch them, they want to escape, and that's it. Sometimes the bandits win, sometimes the policemen do. This time around, and concerning this case, it was how it was. They stopped insulting me, they stopped the campaigns to find their daughter, it's over. They got what they wanted and therefore, peace is back.
MF – And you launch a "grenade" that is called The Truth of the Lie into the midst of that peace. Whoever reads your testimony is left with few doubts about the little girl's destiny. She died in the apartment.
GA – Do you doubt it?
MF – No. Neither I nor the older people who used to work with me. When this happened, I was in Greece and I heard the news through an English channel. The story was so badly told, that only a naive or silly person would believe it. As a matter of fact, when I arrived, I had dinner with several already retired colleagues that worked in homicides, and their opinion was the same. The detail about the window killed the version. Nobody passes through that narrow window space carrying a child.