In all my born days (LOL never felt old enough to use that one before). Have I seen more necropsy's performed, by a bullet company, or the end users than Hammer's.
Your 10 posts in, and its understandable you haven't seen much of countering info to this video.
The goal from Hammer's beginning has been terminal performance. This has been tested all over the world. More than just it "killed 'em dead", but actual bullet tracking, and examination of anatomy post shot.
Animals from smallest to largest have been taken apart, before making statements such as this fellow has made.
I would wager a great deal he has never cut up an Asiatic Buffalo, (much less many) to track bullet path and corresponding destruction, while observing time to tip over. Then sharing videos from stalk to processing.