I think it has shifted in significant ways with Fahrenheit 9/11, which diverged greatly from biting satire and interviews to more straight up shilling propaganda, using the same tactic of people like Alex Jones - asking open ended questions that leads the viewer.
Now I admit I haven’t seen some of the newer ones like Sicko and the like, so perhaps those returned to his roots. Even though I don’t always agree with him politically, I though things like Rodger and Me and TV Nation were good.