It brings up brilliant points about elitism, mental health and social revolutions.
I can also see why some angry men have adopted the Joker as an incel symbol - incorrectly.
It's a great backstory to the Joker. But incel men are not nearly as complex or interesting.
Great film.
I didn't feel sympathy... but at times I felt pity for the Joker. Subtle, but two different things.