They did this in 2008-09 with an 8k payment to homebuyers that wasn't a loan and didn't have to be repaid. This enabled me to but a foreclosed house and make it livable, and I've been living in it since then. It didn't raise prices in my area, because no one was buying houses anyway because regular possible couldn't afford it.
I don't know if I would have been able to get so financially situated if that payment wasn't there. I could've bought the house, but I would not have been able to fix it enough to ever stay on top of the maintenance and bills.
Would this be exactly the same situation? I dunno. But I know a similar push sure worked in the past.
It's probably more sanitary in Japan, but in the US I could see the guy sitting in the both next to me sneezing directly into the water, licking his chopsticks before attempting (and missing) some noodles. Then giving up and using his hands, that he didn't wash after coming back from the toilet.
Kind of like buffets.