What the author is suggesting, though, is not just that one should focus on one's own movement, but that focusing on and enjoying one's movement will somehow create a "magnetic" force that in and of itself controls the attacker. I find that notion to be wildly unrealistic..
There are two parts to what the author said. You left out the part where the author said :
" The key is to be able to focus more attention on the feeling and form of your movement than the speed and power of the attacker.
"Once you focus on the attack, you are giving energy to the attacker
It is not that you are ignoring what is going on but that your response is automatic due to your training and your mind is not focused on the attack or the attacker.