>>86920504I don't know all that much about Rose/Ravager, but Bruce teaching Damien not to kill was an entire arc for Tomasi and Gleason. You don't teach a child assassin how not to kill overnight. Since they grew up surrounded by death and murder it seems like no big deal to them.
Damian never kills again after saving Batman from Nobody. The whole joke is that the last person Damian killed was Nobody and the entire arc was dedicated to him never killing again because he learned the lingering pain of murder felt through his father's lifelong mourning.
I think Priest needs to read Tomasi's Batman and Robin run more closely if he continues making comments like that. Morrison originally wrote Batman rejecting Damian as Robin because he was a vicious little killer, but then Final Crisis happens and Bruce goes away. Dick isn't the kind to reject eager young orphans from becoming young heroes regardless of background, so of course Damian becomes Robin.