“I’m sorry, but you are apparently ignorant of this aspect of the case. You should take some time to educate yourself before commenting further on his injuries.”
One injury to his backside and he still got away, apparently without limping or being slowed down at all. That is not the definition of serious.
Testimony is that he limped away, and was slowed down. He was seen being helped into a car on the other side of the border.
You can make up any definition you want. The doctor that treated him said the injuries were serious, life-threatening, and required extensive surgery to correct, and might not ever be fully corrected.