There they go again.
First of all, I'd like to know what injuries they expect to see with a gun.
Secondly, Kyle Rittenhouse shot Joseph Rosenbaum, Anthony Huber, and Gaige Grosskreutz all at point-blank range (in Huber's case, the gun was pressed up against his torso). He did not explode any of them. In fact, Rosenbaum's hand was still intact enough for them to find burn marks, indicating his hand had been up against the barrel.
As for wanting death, well, in a way they almost have a point.Guns have to be lethal, because sometimes only death will stop an attacker.