It's not meant for the likes of you and me, it's meant for other people brainwashed into thinking this is just "putting down rabid dogs to protect ourselves from them" and who will be proud of this.

You can see some of this in how many appreciate footage from Ukraine were they kill Russians: some people actual enjoy seeing it, even feeling rightous pride in it, even though it's actual human beings dying in it and (IHMO) the well balanced humane take is that "thanks to Putin that is what has to be done, but that doesn't mean on has to like it".

So yeah, to the highly tribalist kind of people who have been brainwashed since they were children to see Palestinians as animals this kind of footage will elicit feelings of glee and pride in their "team" and that's why it's used as Propaganda.