Aside from the obvious populist scapegoating, a striking thing about the government’s stance here is how utterly incoherent it is with the past decade of LDP policy - including that of Takaichi’s icon Abe, who squarely aimed migration policy at shoring up the country’s dwindling workforce.
In Japan they are considering increasing the cost for applying for a permanent visa to around 1900 USD because "other countries charge more than Japan". It costs 50 USD in Spain, just say clearly that you want all foreigners out of the country, Japanese government.