How in the world are you coming up with that conclusion??
He was charged with felony murder, which means that someone was killed during the commission of a felony by the accused. The only felony is the weapons charge. The weapons charge is based on him being a felon. "But for" he being a felon, there would be no felony or felony murder charge.
That's not to say that he wouldn't have gotten hung with some sort of manslaughter charge if he had beat the dude to death with a baseball bat, but he wouldn't have the weapons possession charge. But he didn't so we can't speculate about that.
further includes, without limitation
Any law that is "without limitation" I personally consider not precise.