It's groundbreaking in a sense this isn't a topic discussed very often in blockbuster movies. Joker's mental illness is front and center of a story here. I think it's great how the movie criticized lack of help for these people, you could argue none of this would have happen if social services have been properly funded and Arthur got the help he needed. Bringing this issue to the mainstream audience is great. Not exactly sure what stereotypes should portrayal of Joker's illness reinforce in me.