I think you are factually incorrect. its been discussed many times and there are very good raesons imo...why kate refused to answer questions. IMO she actually helped move the investigation forward
I find your posts very frequently add substance to the debate by putting thoughts and what we know into words. I think this is one such post.
The arguments regarding "the questions" tend to circulate around the negativity from sceptic viewpoints and not on what the long term consequences of a Cipriano type capitulation represented for Madeleine's investigation when the terms of the 'deal' outlined to Kate's lawyer by the judicial police on the 6th of September are considered.
Without her ability to 'hang on in there' (given that the Portuguese courts didn't have to sit in judgement of her physical torture unlike Leonor Cipriano where the phrase 'beaten out of her' comes to mind) there would have been no continuing investigation into Madeleine's fate.
I think the proven resentment that Madeleine's case was reinvigorated in 2011 and continues today keeps the internet war against Kate and Gerry McCann going with 'the 49 questions' being just one tool in the box.
I think your observation that Kate ''helped move the investigation forward' is a precise one.