Hey, I've just had a great idea. Just for fun, me and a whole bunch of friends from England are going to go up to the Faroe islands and hunt a load of Faroese people.

It's ok, we'll eat them afterwards and make trophies out of their bones.
We won't make them extinct, we'll leave enough there to enable us to come back and hunt them again next year.

I'm being ironic of course, but I hope the point comes across. Pilot whales are a type of dolphin. Dolphins are the second most intelligent life form on this planet, even more intelligent that previously thought. We wouldn't slaughter chimpanzees or apes in this way, just because they look more like us.