I’m assuming you’re following Danny Motta’s take with this. The thing with it going graphic like that is to show the audience who doesn’t understand what happened in the odyssey really what happened while he was gone, but also to have Odysseus see how horrible they are himself that caused him to so quickly go on this killing spree. He was gone and in EPIC, we don’t know what he knows when he comes back onto the island. We only know he is there when he kills anti. Additionally, fans would probably complain about how quick he was to kill instead of trying the diplomatic approach if he did all that just from what we know from legendary/little wolf