okay, so what happens DIRECTLY before this bit of dialogue needs needs NEEDS to be talked about.
This entire episode is all about Batman and Orion shitting all over how The Flash does things and how flippant and aloof he is and so they all go to his city to try to stop some of his criminals from trying to kill the flash.
And when Flash finds this villain in the bar Batman and Orion both try to beat the info out of him and flash calls them off and sits right down next to him and just asks if he’s gone off his meds and lets him vent about what’s going on in his life. And at the end he tells the Flash that he’ll start taking his medicine again and where the rest of the villains are that are trying to kill him. ONLY THEN does Flash tell him to hand himself in.
once Flash is assured that he’s okay and not going to hurt anyone else. it flies in the face of Batman’s fear and Orion’s brutality, it throws both of their brutal real-world techniques out of the water… because the Flash just wants people to be happy and safe, not to strike fear or defeat foes.
and that makes him pretty amazing