Impossible to say. On one hand, he doesn’t pose much of a danger to civilians, but on the other hand, he is absurdly powerful. Luffy at 1.5 billion was fighting Kaido who was almost at 5 billion, so using Shanks’ bounty isn’t a reliable metric. Plus, we don’t know if Shanks was stronger than Mihawk at the time (he most likely wasn’t, seeing as Mihawk doesn’t consider him a worthy adversary anymore).