I guess I don't have a reason to doubt you but that's not what the page said when I clicked on it. It may have been changed but at the moment when you click on it, it says this:
The original page also was headlined something similar to
"Let's go shoot something" with a photo of the shark (and a couple other fish, too). The paragraraph you quoted, along with the photos, to me indicates that they go out randomly shooting fish, even sharks, is OK because they will go to good use. NOTHING was mentioned about knowing what to shoot, or being a responsibile steward of the ocean.
FWIW, I do not spearfish. This guys website is a turnoff to the sport and places it in a bad light.