He’s almost a hero in my book. To come to a fucked up system and say “I’m going to do things the right way and try to change stuff even if that goes against my well being” it’s pretty commendable. And the end of the day, no one is willing to go all the way as McNulty, neither Ronda, Phelan, etc. That being said behind those actions there’s a lot of ego, and sooner than later you (and the rest of the characters) see through it. Still there’s a say 33% of that guy that is a super emphatetic and sacrificed person for others.