My guess is that doctors are pretty brainwashed these days. Most of it is corporate influencing mainstream thinking, but I think some of it is psychological and how they view themselves and their work.
I think some of it is that many doctors tell themselves they're doing 100% of what they can in terms of healing (and I think they are giving 100% of their time and effort), yet having to rationalize that idea that some non-western medicine has cured people they said couldn't cured or healed. It's a horrible cognitive dissonance thing to realize that you've been 'doing things wrong' for years by dissuading people from alternative healing which might have actually helped (or recommended pharma treatments that were worse than alternative medicine), so I think it dissonance kicks in ultra high gear where they become over sure of their advice, to the point of closemindedness, because they can't bear the idea that they might have hurt people over the years.
This is all just speculation on my part, though I've seen such cognitive dissonance causing overconfidence in one's advice/judgment/opinions other areas/professions.
I think some of it is that many doctors tell themselves they're doing 100% of what they can in terms of healing (and I think they are giving 100% of their time and effort), yet having to rationalize that idea that some non-western medicine has cured people they said couldn't cured or healed. It's a horrible cognitive dissonance thing to realize that you've been 'doing things wrong' for years by dissuading people from alternative healing which might have actually helped (or recommended pharma treatments that were worse than alternative medicine), so I think it dissonance kicks in ultra high gear where they become over sure of their advice, to the point of closemindedness, because they can't bear the idea that they might have hurt people over the years.
This is all just speculation on my part, though I've seen such cognitive dissonance causing overconfidence in one's advice/judgment/opinions other areas/professions.