So you are saying that the investigation is complete and the Japanese officials "decisions" are preventing the findings to be released to the public?
What decisions are you referring to?
My read is that the investigation is still ongoing to evaluate all possible factors and the Japanese Investigators-In-Charge are not ready to publicaly conclude that all factors have been evaluated.
Meanwhile the operator can see enough factors uniquely applicable to their operation to improve their response.
Sounds good enough for me.
If there was a known generic problem likely to affect other operators they would have been advised before the final report hits the street.
Flight safety doesn't wait for final reports it is constantly on-going and updating. However the final report does give one closure that all the lessons are there to be learned