From the article. >While immigration has risen in previous years, foreigners only make up around 3% of the population and opposition to accepting more has grown.

That 10 USD isn't for you , it's for an immigrant from a less affluent country. The Philippines for one. Although Japan also has a significant South Asian population.

The tradition is you work a horrible job, but your kids get to grow up in a rich country with much better opportunities.

Japan doesn't want immigrants though. They can fix there demographic crisis in a single year by opening immigration up.

As for defense spending. The only issue is its not homegrown tech. Looks like Mitsubishi is actually working on a 6th gen fighter though.