I'm so glad they didn't portray Moriarty as someone who's obsessed with his aim that he'd disregard any small things that doesn't bring impact, but rather as someone who truly wish to eradicate all evils, even if it means being evil himself.
Indeed it was horrific to know that he's someone who believes that the end justifies the mean, but there is more to him than that. His action isn't saintly by any means and people will have opinion against him, but at his core, he wants what all of us would want, to create a better place by abolishing the corrupted class system.
Thank you for the translation!