I have a sneaking suspicion that this whole "we will build robots to solve our demographic crisis" is just a ruse to allow entrenched corporate/political interests to continue down the softly-padded path to their graves, with the only cost being a few gimmicky displays of technology. This is not to mention that accomplishing their stated goal would require that Japan massively expand immigration to attract the necessary STEM talent. We in the west are probably being duped in the same fashion with all of the hype surrounding AI.