What did Oz say that should have been challenged?What he did or did not say in the segment is irrelevant to me (unless it was "Listen folks, Ive been misleading you all for years and misrepresenting science") he constantly says things that need to be challenged. So much so that he got grilled before congress and still hasnt appeared to change his ways from what I can see.
Just because he may not have spouted any woo to Penns face, does not give him a pass in my book. Your view may be different, not saying you should hold my values.
Oz is not that bad. He is a qualified surgeon and a medical professional.
The problems with Oz are that sometimes he welcomes purveyors of woo on his show and allows them to go unchallenged, and other times he himself promotes woo.
But that doesn't happen as often as you seem to assume, and most of the time the information he presents is consistent with mainstream medicine.
That doesn't excuse any of his woo, but it's not reasonable to expect someone like Penn (or Novella) to pass up a chance to reach such a large audience.
Nor is it reasonable to expect guests on his show to always point a finger and call him a liar.
Nor do we really know all of what Penn said or did on the show, since we only see an edited version.