Whatever science gained from these studies is quite minimal. Killing a pressured species does little to advance knowledge about why their numbers are decreasing. This is reverse logic.
Additionally, most folks know that the IWC is a total sham too. Japan always votes for whaling to recoup money invested in their boats. Its been that way since my early days in Greenpeace when my job was to convince the Japanese of viable alternatives. It never went to far and I was threatened with a beating once.
I also think it wouldnt hurt the Japanese to be a little bit more introspective when it comes to understanding that Kujira is a pressured animal and that there is evidence which supports the fact that we may be dealing with a possible sentient life form.
I know that the historical roots of Japan and the sea are linked, however giving up a small meal of Kujira is not a biggie for anyone shopping for meat at the local grocery.