Watching the video, I have my doubts about how effective it would be.
The prongs dispersed quickly as seen in the jelly and I doubt they had the mass to penetrate, say, a rib cage. and they were moving at angle away from the point of impact...they might do a lot of skin and surface muscle damage, but that won't be a sure fight stopper.
The "core" which continued on is the weight of a 22LR round...again, not the maximum fight stopper.
And, as Majjer said, the ads set you up for a probable cause trial.
I'd wait and see how they perform on animals or on the street, if anyone is foolish enough to load them for SD....and even if they do well on animals, I don't think I'd be that foolish to use them.