It took me a bit to see that the idea is to get you to watch through to the end with the bull, as otherwise you might turn away.
Still, I’m not sure of the effect on people without an existing aversion, as it’s only the editing and audio keeping this from being “Bullfighting: The closest we have to fighting dinosaurs because fighting emus would look stupid. It’s awesome! Not as awesome as fighting dinosaurs, but until we can clone them this is as good as it gets (outside of cock fighting). Get your tickets now!”