The person you are replying to is trying to make the following argument.

Tao is intelligent. Intelligent people have higher standards for understanding the world, such as assuming that the mechanism behind medicine are well understood. But most people are not intelligent, so they don’t understand things like medicine at the level Tao presumes.

I don’t agree with this argument, just explaining it.

I'm not sure if Tao believes that but if he does he should read up a bit more on medicine.

Where that falls down is that it is not even a good idea to limit the use of medicine to only what is well understood - i.e. that would be very un-intelligent. There is nothing higher level about it, quite the opposite.