But that is not how world works, is it.
If I go on, buy a telescope baton, find Matty Cash and just fucking destroy both of his kneecaps, I will get arrested.
Trial will be held. And most likely I would get some serious kind of punishment for that.
Will it make Cash knees repaired and him able to ever play football again? (luckly) it does not.
But that kind of punishment is meant to DETER OTHERS FROM DOING THE SAME THING in the future in similar situation.
And that kind of deterance should protect potential victims.
So... you know... maybe retrospecitvely punishing dangerous tackles could in future decrease amount of those instances?
I mean... after all this is how we operate as society. If someone gets killed, we do not just shrug shoulders and say "Well, whatever we do with killer, does not bring the victim back", do we?