That is incorrect under English law. The rights of people regarding the press are different according to set criteria. Those who earn their living in the public eye have less protection than private citizens. Merely being the objects of interest (like the McCanns, Christopher Jeffries, the persons arrested in the missing woman case etc.) does not result in loss of private status. The McCanns have te same right to privacy as you and I.
The other exception to private privilege is people acting on behalf of the state. This even goes for application of libel laws where public servants have reduced rights to sue for libel if they were acting in their formal role- this is seen as necessary to hold state power to account.
I have written no personal insults about Amaral, but have merely pointed out the facts about him
The McCanns have a right to privacy? After all those photoshoots with the twins faces not pixelled, Kate letting everyone know that she couldn't make love to Gerry, Madeleine's perfect genitals. And their documentary showing Kate and the children in the kitchen? Now we have an article on how the McCanns are with Kate's father because he is poorly from his Parkinsons. This is to gain sympathy, nothing more. The public didn't really need to know this.
The problem really isn't about protecting these people's private lives. What they want at all costs is to prevent any information about the investigation to get out in the UK.
When are you going to stop writing the lie that it was "his" investigation? He was not a lead detective, the investigation was under the authority of the Ministério Público and the judges.
How do you know that Gonçalo Amaral wrote the book to get rich? He states that he wrote the book to defend his honour and that of the PJ and the investigation.
Of course, his finances are not too good at the moment because the McCanns had his assets frozen so that he would not have the financial means to defend himself. It infuriates them that people are supporting him by donating to the defense fund.