The point is that the campaign against Amaral fooled much of the UK public because he is a foreigner. The campaign to discredit Grime fooled people because he was in some sense a subcontractor. But the the peeps who orchestrated those campaigns realised they would not stand a chance rubbishing Harrison (much as they would have liked to) who worked for a 100% UK Police organisation, so they wisely left him alone, even though it was him who worked with Mr Amaral and recommended Grime and brought Eddie to Portugal. Similarly now those peeps will be totally powerless to attack should the SY investigation take a turn not to their liking - absolutely powerless.
I don't think anyone is actually looking for power. I certainly am not. Scotland Yard will do their job to the best of their ability, which will be good.
And just supposing The McCanns were found to be culpable, I have nothing to feel ashamed of by supporting them in the rule of law.
Nor will I feel ashamed of criticising Amaral. He did a terrible, self serving job, and ignored a whole pile of evidence. And certainly never nailed The McCanns.
And anyway, I don't know any of them, so it has always been an exercise in logistics for me.
I work as a gardener around here, and yesterday I was talking to a client. A Brit of above average intelligence who told me that he thinks The McCanns are as guilty as sin, and Gerry isn't Madeleine's father. I was stunned. But No, we didn't fall out about it. And it isn't important anyway. Any more than is my opinion.