His is not a voice in the wilderness as it were. This is a real topic of discussion in the Japanese gaming industry. Stale production methodology has lead to an abundance of stale products, and poor sales performance. These are actually fairly valid points to be made, and he isn't the only one making them. A number of people in the industry have raised this same point in the past couple years, as Japan has seen sales of its software wane in comparison to western developers.
Firstly I would say exception do not disprove the rule, and secondly a great many of those exceptions are the result of lobbying from western offices of said companies. Without those officers its highly likely you would not see a new Street Fighter or a new Bionic Commando. On the upside it is a good sign that the Japanese studios are beginning to listen to their foreign staff. Be it a strange way to get novelty. Basically being forced to be novel by having to leave the comfort zone.
To hit some other points yes Japanese developers need to start investing in real writing staffs, or hiring real writers to come in on projects. Further more yes they do need some people with experience in the film industry. Their audience isn't just eight years old anymore, and cliches, bad dialogue, poor plot, and piss poor pacing are just not acceptable. It is a heavy detractor for Japanese games on the whole.
Just good writing alone would open the door for a lot of novelty. After all it is the writing that has lead to the popularity of Mass Effect, Oblivion, Fallout, and even Grand Theft Auto. It seems with good writing you can get off the damn rails and give the players real freedom. Suddenly they can actively be engaged in unraveling the game worlds. How many of us have replayed games to make different choices just to see the outcomes.
I often laugh when a Japanese gamer complains about the violence in Western games, because I also know there is a strong undercurrent of morality based decision making. Sure I can blow away a thousand enemies in Mass Effect with my assault rifle, but I also have to reason with this drug addict diplomat accosting me outside of the bar. Say what you will, but I think learning through experience is superior to spoon feeding a linear morality tale.