The staying healthy is making things worse, seeing as people live longer and therefore the ratio of old to young is getting worse.
I haven’t seen much of this changing infrastructure as a government policy to improve the birth rate. I thought it was getting worse. More and more people cramming into the mega cities while small villages in the countryside have fewer and fewer young people and end up with just old people, hence the large number of deserted houses.
The robots aren’t going to address the real issue, which is that there is going to be a horrendous tax burden on future generations when young people are such a minority compared to the elderly.