I don't understand following - Japan had QE measure in place thus increasing money supply. But then they also increased sales tax from 5% to 8%.

Why take conflicting measures ? How increasing sales tax is going to make consumers and middle class spend more ?

Have Japan's economists not considered it ?

"We need more women in the workforce to stimulate the economy!"

"We need to encourage women to have more babies in order to avoid a population crisis!"

Welcome to the government of contradictions.

It's the Politicians who have not considered it.