JMO and experience, but I have worked LE in: County, City, State and now federal, in that order. At no time have I ever worked in a department where there was a big conspiracy or a large cover-up, to my knowledge. I think it would be hard to pull off, especially in a multi-agency situation, and a large public interest case. Sure, it CAN happen and I'm sure has happened...but I guess my question would be why in this case, and how would the powers that be that were influenced by mogul's $ or whatever, then have that "look the other way" manner of working trickle down through crime scene techs, several layers of supervisors, several detectives, the ME's office, probably the DA's office, etc.
I guess I'm just not seeing here on the case, yet, a good reason why so many people would put their own personal work up for scrutiny, for some powerful man who they probably never met. Most people want to be known for doing good work, and seeing justice done, especially (right or wrong) when a young child is involved.
Again, not saying it didn't happen that way, but I don't think so. Maybe fault a few people in missing certain details in their work, but that is different than turning the other way to actively participate in shoddy work.
JMO and putting the flame suit on.