Can't imagine these 2 will gain anything: it's sadly notoriously hard to prove, very little evidence, plus they both lied before, so I can't imagine this will end well.
Hopefully they will bring others out who were abused by him. There is 8 in total so far. Two Mexican boys from the 80's (buried due to MJ about to get some award from the President). Chandler which led to the first trial, Gavin which led to the second trial. Terry George (a British boy), and Micheal Jacobshagen, plus Wade and Safechuck.
There is SO much misinformation about sexual abuse flying around, it's insane.
For it to be a lie, it's one hell of a build up. Depression isn't something you can make up. These men struggled for years. And this 'lie' also extends to parents, siblings, spouses too? That's a lot of people involved.
I don't know what evidence people are expecting to find. Historical sexual abuse is based on circumstantial and anecdotal evidence, nothing physical. The FBI were watching him for 10 years? Well unless they had CCTV in his bedroom, they were not likely to find anything.
More to the point, he was a person of interest for 10 years; that's a long time to follow an innocent person around for.