A large fraction of the people in prison are guilty for each others crimes.

This is what no one would admit to. Which brings new meaning to guilty beyond a reasonable doubt.

I also question how it took so long for so many federal forensic tests to be declared bunk when there are so many nonprofit groups, the most prominent receiving tens of millions a year. 

I don't think you will ever hear a non-profit group in one stroke, from indirect involvement, exonerating thousands of prisoners. There's an innocence project, but no one is examining why everything is so incredibly flawed and incompetent.

Clearly the most likely source for change would be someone actually intelligent opening their mouth and pointing this out...