So to the OP. Let me see you get on a strange horse you have never seen before and do better.
I do not in any way shape or form agree with posting videos of other riders to make fun of and talk about how "horrible" they are. Post your own videos and we will rip you apart and tell you how pathetic you are and how you shouldn't be allowed to jump.
As for this being the worse riding ever? Obviously you haven't been exposed to very much. And on that. I would love to see you do what these athletes do. I bet you would fall flat on your face before even getting to the second phase.