Exactly. The Reaper concept has a lot of potential but it's not explored in an interesting or even logical way. I think the better story would've been Batman beating The Reaper in all of their encounters with the latter becoming more desperate and increasing his methods, frustrated that the gun-less rival is holding his own. Reaper eventually fades away into irrelevance with Batman's modus operandi validated. Batman grabbing a gun after getting bested by the Reaper feels random and extreme considering what preceded the story.