Originally Posted by
phantom1592
Hal never considered the Lost Lanterns 'dead'. He outrights states that he left them enough energy to survive... and Kilowog points out that all the OTHER lanterns in a scrap somewhere will be screwed when he steals the power.
Killing them didn't count. Outside of cutting off Boodika's hand... it was little more than a glorified training session. he ran a gauntlet, but didn't kill them. (Between Last will and testament book, and John's lost lantern arc.... it's been verified on multiple realities that they survived.
Though in the Guy Gardner books, there WERE a lot of dead lanterns floating around, so yeah... stealing the power did rack up a body count.
Honestly, I don't think Killing Sinestro was THAT big of a deal for him. It's what pushed him out of the 'Heroes don't kill' bubble that he'd always been in... but then they eventually even changed the rules to where it was totally okay to kill Sinestro corps...
Back during Emerald Twilight, Sinestro wasn't shown as his good buddy and best friend... He was 1) The guy who trained him and they NEVER got along.... and 2) A traitor to the corps who had murdered green lanterns and entire planets. He was the reason that Kilowog was alone in the universe. AND... He had been dead for years. There weren't any stories between Emerald Dawn II and Emerald Twilight to contradict it.
Sinestro was the #1 most evil excuse for a Green Lantern and a blight upon the tradition. Even in the story it was shown as a 'I should have done this years ago' kind of thing..
Kilowog however? That was one of his bestest buddies in the universe. I don't buy that killing Sinestro pushed him over the edge... but Killing Kilowog certainly did. That was the one step too far that he could never come back from. The point of no return. Anything else, including Sinestro he could have been forgiven, but That was the last straw.