This annoys me about characters like that. They act like they're heroes but assume that gives them the right to do whatever they want. And anyone disagreeing with them is villainized. Yet the MCU is weirdly selective about when killing villains is and and when it isn't. Like, US Agent is evil for killing someone who helped kill Lamar but Clint is absolved of murdering many more who did nothing to him. Or how some henchmen are worthy of being killed but villains like Green Goblin or Doc Ock can be reformed.
And even if they're like that in the comics, that doesn't make the comics any better. It's good to see heroes reflect on their actions and actually deal with the consequences of their actions. What's crazy to me is, of all the MCU D+ protagonists, Loki, the most evil one, shows the most introspection and consideration for his actions. That's partially why it's the best show so far. I can't say Kate all that impressed me as a character by contrast