Let's not get into arguments over the internet, it makes you look like a fool. It's an open forum, anyone is welcome to post whatever they want. Anyway, I have owned my Ka-Bar for coming up on ten years now -- and it's seen it's fair share of batoning and has not bent like the one in the video. The key to preventing that: put some WD-40 on the blade before batoning. It will help it slide through the wood with much less resistance.
Now, the knife was not intended for batoning or even as a woodcraft knife, but as a combat/duty knife for the US Marines, Army, and Navy. They still use it today, and if you ask a Marine about his Ka-Bar, it'll sound like love story. They are great knives that have been put through quite a bit. For a camping knife or "survival knife", they will work good, as long as you don't push it's ability. For batoning wood, a Cold Steel Trailmaster is a good way to go, and you certainly won't experience any bending of the tang.
So, all in all: Did you waste your money? Absolutely not. Is it the best knife available for batoning? No. It will serve you very well for many years provided you take care of it.