For a nursing care facility, being able to tout a robot nurse is great for marketing. Whether or not the robot is useful is almost secondary.
In many Western countries, the answer to these problems has been immigration. However, Japan is famously insular; a prospective immigrant cannot hope to naturalize as a Japanese citizen they way one could in, say, Canada or Germany.
So Japan is otherwise stuck with three options: let the elderly wither and die with little care or dignity, commit a vast portion of Japan’s relatively scarce workforce to take care of its elders, or robots.
Japan picks robots.
In fact, nurses have been trickling in from Philippines and elsewhere. This program could be expanded considerably soon, as we have already seen with retail, construction and other sectors.