a) You did not say that you think the Japanese regulators should slow-walk a cell-based treatments for conditions that aren't life threatening. But that's too non-specific. The Japanese regs will look inside that face and get the real underlying facts. Again, the underlying facts are there's a sizable amount of depression, substance abuse, counseling, suicide behind hair loss. (Side bar: since you indicate that hair loss is not a life-threatening condition I should point out that suicide is life-threatening and so is depression.) There is more at stake than reduced quality of life.
b) I will go along with what the CEO is saying unless/until I have reason to believe otherwise. Right now, it appears that the CEO and the Japanese regulatory agencies are likely wrapping things up, the CEO is aware of what's going on behind the scenes, you are unaware of what is going on behind the scenes, so I'm going with the CEO's opinion at this time, over yours.
c) I don't know exactly what constitutes the beginning of a trial so I can't say that the beginning of the trial in December would mean that all 5 patients would be injected by December according to the plan. Since you are not a professional involved in the medical treatment approval process I'm not going to go along with your idea that the beginning date of a clinical trial means all patients involved must be given treatment by that date.
d) Announcing a best case scenario does not mean that his plan has nowhere to go but down. It could also go sidewise.
e) The Japanese take men's concerns about their looks much more seriously than the USA does. A lot of people think the Japanese don't lose hair but they do. But unlike America, in Japan it is totally socially acceptable to wear a hairpiece although Japanese men still do want their own real hair back. In America if a man gets a scar on his face or loses his hair people will tell him to man-up but in Japan if a man gets a scar on his face or loses his hair it's considered a bigger issue.
f) You yourself acknowledged that the Japanese regulators should not care about your opinions regarding the inner-workings of the regulatory process so why would you think I care about your opinions regarding the inner-workings of the regulatory process? I don't. Unless/until new facts emerge I'm going with the CEO's statements.