I don't take people who call people crackers seriously, it's like listening to someone who uses spic or ******, and if goalposts were moved it would be them being moved like people in general.
Cochran was the lead attorney, by virtue of that he's associated with each thing going on, and his input was mentioned at numerous points, just because he wasn't the one putting on the show with the blood and general police fukkery like Baiely and Sheck doesn't mean it wasn't shown in the doc.
Though yes, this was clearly biased towards the OJ did it and the lawyers were smart enough to get him off crowd.