As always history is not one-sided. This is why I mentioned that many, not all, who volunteered saw it as an honour. It is obvious that many of those who did volunteer were so indoctrinated that the thought of death was secondary to the thought of honour as seen in the article you posted: "Hisashi Tezuka recalls that a few of his colleagues quickly wrote their replies and strutted away. But he and most of the others stayed for what felt like hours, unable to decide."
I can only assume that such a quick response would have only been made by choosing the “I passionately wish to join” option. We can make this assumption as we know that many residents of the Rising Sun Empire were so infatuated with their country, Emperor and culture that such a decision would not have needed more than several seconds for many of those who were taught that honour stands above all else.
This is not a topic that I cover in this article as such I encourage all of my readers to do research of their own and not trust everything written by me or anyone for that matter as such I am thankful for you pointing this out. I think it does indeed give us a new look in the real humanity of those portrayed as beasts by the US Government.