It matters when assessing the quality of the evidence given by those who were responsible for Madeleine's care.
Who are you ~ me ~ or any internet voyeur to 'assess' the quality of anything on the internet ... apart from reading and assessing customer reviews of the performance of appliances.
The experts of the Policia Judiciaria and Scotland Yard who have access to ALL available information have carried out any assessment that matters and have acted and are acting as a result. Theirs is the only assessment worth bothering with in the search for Madeleine.
In my opinion ill informed speculation cannot hold a candle to that.
There is no problem in assessing the performance of Mark Warner holidays as a topic ... particularly as some may actually have first hand experience of such.
However it is my opinion that police investigations are best left to the police ... particularly active ones dealing with real lives and real people.