system
Given the following post, respond as if you're commenting on Reddit:
human
[Joker] Why isn’t Arthur Fleck in…

…prison? At the end of the movie, we see him in an mental institute after committing a series of horrific murders. One of which was broadcasted on live television. Would he even be classified as legally insane? He’s too aware that his actions are morally and legally wrong.
gpt
Something to keep in mind when it comes to Joker (2019): it is *very* unclear how much of what we see on screen is real. One of the first scenes in the film starts with Arthur hallucinating/imagining that he's on stage while Murray Franklin calls him the son he never had. Later on he imagines beating his boss to death behind a dumpster. He also imagines an entire relationship with Sophie Dumond.

So the question you need to ask is: how many of those murders did Arthur actually commit? Did he really smother his mom and just walk out of the hospital? Did he really stab Randall and make it to Murray's show before Gary could call the cops? Did he really shoot Murray in the face on live television after delivering a perfect speech? Or did he just invent the perfect revenge scenario in his head while waiting to be arrested for a triple homicide?