Given that litigation is paused due to the DOJ's ongoing investigation, the filmmakers were likely constrained in what they could even say about it. However, these constraints were not imposed by McMahon himself, who had virtually no means to prevent the documentary's production. In fact, Vince reportedly attempted to purchase the documentary to kill it, but this effort was obviously unsuccessful.
I've watched about three and a half episodes, and there's little content that isn't already widely known. However, I find their handling of the Pat Patterson accusations intriguing and more diplomatically favorable than I had anticipated.