Ok, got to the point now where he explains the fact he realized that many surgeries are not necessary. Most people that will cure will cure naturally coz of healthy lifestyle (no smoking, exercise, plant-based food, etc), not because of the surgery. So he does not feel comfortable with the fact that the medical system promotes surgeries rather than improving lifestyle... as it is not profitable.

I've lived in different places. Not all places push for surgery, that's often a solution of last resort. But that only works in places where the medical is not a for-profit system, unlike the US. And unlike Korea, to a lesser extent. Many doctors here also push for expensive treatments whenever they can. Countries with social security might be less sensitive to this kind of mindset. At the same time, it's nice to get seen by the doctor right away rather than having long waiting lists as in some EU countries. Proves again, it's not all black and white to me.