They are sleaze.
He wanted to be traded away from the northeast......Belicheck wouldn't do it, even though he knew he was in trouble and hanging with the wrong crowd.
The Patriots secured him a secret apartment, where he used drugs and other 'fun' things.
You hear phone conversations where Hernandez talks about how the team gives him any "prescription" drugs he wants (on a call with Pouncey)
As Chris Borland says in the documentary, "players all sit around and talk about how the vampires (NFL) run the blood bank"
This documentary and the sudden retirement of Kuechly don't paint the NFL in a good light.