Yes it is very cool to see Japan lead in Bitcoin adoption in so many areas, it is these types of purchases where it makes sense for businesses to build in processes to accept bitcoin. It can be challenging at times due to the volatility, but I believe the benefits out way the challenges.
Now not only Japan open an opportunity to BTC Arizona and Georgia State passed law for BTC as tax payment.
They are passing law because it could be there are lots of law makers are BTC holders.
Anyway whatever the purpose it a good thing to crypto.