Really, not the best of times for a Cabinet member to be expressing a wish of this kind. Indeed, there is never a good time for a Cabinet member to express such an opinion.
Chief Cabinet Secretary Fujimura Osamu (Fujimura the Unbelievable) has responded in his usual force-free manner, "There is nothing that the government feels it needs to do."
Expect the usual explosions on the other side of the Tsushima Strait.
Later - What is Matsubara doing? He is misreading the situation. He is interpreting the louder publicizing of positions the government of Japan has always held to be the trumpets announcing the dawn of the Era of Fruitcakery.
He is, as he is in almost all things, wrong.