Typical "the MC is the good guy because we say he is" story.
Whatever moral high ground he has at the start dissappears soon enough. He'd say "it's bad to hurt innocent people, I only want revenge against those that wronged me", then turn around and consider killing a bunch of innocent people to protect his own secrets and plan. And everytime he decides against doing something unethical (which any decent person wouldn't even consider in the first place), it's not because it's a wrong thing to do, but because he's not sure he could get away with it.
"Should I buy slaves? Should I kill them all? Should I buy that thing commoners enjoy so only I can use it?"...Real hero material there.