Then don’t kill anybody as Dark Urge. They said in the stream that DU can be a hero or a villain just like any other character.
You cannot have been a murder hobo and then later on magically become a hero. All the killing of innocents you did doesn't get offset by all the killing you now don't do. It doesn't work that way. If you used to do horrible things, all the "good" things you may now do don't even in the slightest make up for or erase all that evil you did in the past. So Larian can say all they want that DU can be a "hero," but that's complete B.S. DU can NEVER be a true hero (and ditto for the other original origins).
I'm pretty sure the people you have been saving and helping since your redemption arc would disagree. The same person can be a hero for someone and a demon for someone else.
Also ''heroes'' are pretty childish as a concept, all heroes you see on movies let the villains live because ''I'm not like them'' (AKA have a clear conscience) just for said villain to come back 5 years later and kill a million people just because you couldn't finish the job. Heroes are mostly someone with superpowers and ''the moral high ground'' with very simple personalities aimed to be an example for kids growing up into good acting adults.
