Breitbart is a shadow world that exists largely without out exposure to the light. Maher sat there and saw that Milo was doing himself in. Intervention was not needed.

Totally agree.

Did you even watch the segment? Maher destroyed Milo by letting Milo be Milo. Milo came off as some kind of whiny, attention seeking, professional celebrity. After the Maher interview and the exposure to an audience that had only seen Milo on the fringe, barely giving him any attention, Milo self-destructed.