He said at a previous press conference:
"Instead of treating symptoms after getting sick, we will switch to medical care that helps people stay healthy, and we will reform the medical and insurance systems to do that.This is an area where the private sector will lead and invest. So, what if instead of universal health insurance, the private sector took charge of this field?" 

 Let's try to translate his argument.

He certainly does not deny the Japan's universal health insurance system.

What he is advocating is;

In addition to the standard medical care provided by the universal health insurance system, "I would like to see the development of advanced medical care that only the rich can afford."

:mastorage: