It is debatable. There could have been a story reason for killing off one of those characters. Did a writer or artist say they could kill off one of those characters because it would destroy John or Kyle?
Guy has had an issue to himself. John, Guy and Kyle have had sizeable and important roles in all the story arcs so far, not all at the same time, but it has been spread out.
The current actions of DC shows that he currently isn't a threat. And it does not work like that, you are shifting the burden of Proof.