That's not hate.... And it's not about the 'miss'.
His technique is poor and in turn predictable.
I think it's just his run up. It works on most occasions.. and he hasn't not put the ball in the back of the net for us as a end result from any of his penalties (although he had a goal disallowed for stopping in the runup a couple of years ago, and his penalty was saved today before the rebound).
It may not work on some occasions, as he deliberately takes a slow run up and waits to see what direction the keeper is going in, as confirmed by Son himself in the post match interview. But that means that he doesn't always get as much power as needed in some penalties, especially if the keeper goes the right way.. so then it's all about the placement.