No, the poster is not. We're talking about the world's third largest economy by GDP, and I have first-hand experience with being on the market for Japanese real estate, today. You want to hear a joke? Try San Francisco Bay Area. Then look at the price of a house in Tokyo.
And my God, the construction, convenience, and technology of Japanese houses beats the living crap out of the shoddy construction you see in the Bay Area. Do you get less usable land square-meters wise to some degree? Sure. But if you can concede some of that, the deal is way better because of the quality of life you can achieve.