With the amount of blood that immediately came out of him and the almost instantaneous jerking of the arms I'd bet he was out before the blood hit the floor.

That being said, I've had more sympathy when disposing of the rats chewing up my counters and shitting on my skillets than I did watching a fascist get but a tiny fraction of what he enabled and advocated for.

Being really honest with you. He probably didn't feel a thing. That right there is an instant-death.

he thought empathy is fake, don't give him any

It gets less hard after realizing that this is what Charlie has been advocating to be done to others. And has been done to others with the justifications he created for it.

A lot less hard.