Reading the biography of George Takei, it was clear why, although he is a second generation Japanese American, he is incredibly shallow and uneducated about traditional Japanese customs and background history.
There is nothing here but the rampant indulgence of Japanese taste, a Japanese taste that has developed in a pseudo-fantasy bloated with delusional subcultures.
Just as Bruce Lee's kung fu films are little more than pseudo-modern ballet, this is nothing more than a commercialist romp through speculative creature adventure tales with a Japanese taste that is to all intents and purposes a reified pseudo-modern Japanese taste.