I agree this is an interesting article, and I can possibly be convinced that the Japanese in their own territorial waters have a right to continue to hunt for food whale species that can be shown to be huntable in a sustainable manner.
But what if American whalers in the 19th century exterminated all the whales in Japan's territorial waters? Should Japan have the right to hunt whales in international waters to make up for the whales "stolen" 150 years ago?
I lived in Japan for a couple years in the late 1990s, and had a few conversations with locals about whale hunting. The general impression I got was similar to the article: people were aware of the controversy, thought that harvesting 30 whales a year (or however many it is for the Japanese Antarctic whaling fleet)for "research" was a transparent lie, but viewed whaling as a sovereignty issue and didn't like being told not to do it.
However, one issue the article didn't mention: I never spoke to anybody in Japan who actually liked the taste of whale meat. In fact, the only people I met who had actually eaten whale meat were women of the WWII generation, who got protein from whale meat because the meat was cheap and they had very little money during the war. For these people, whale meat had a connotation connecting it with poverty, maybe along the lines of cheap bologna in the US.