Joker 2: The Musical

i didn't watch it, but i know someone who did. i don't plan on watching it anytime soon, so i got him to tell me how is ended.
he said he didn't like the ending, but to me it make perfect sense. Arthur dies and another inmate who admired him while he was in Arkham, basically becomes the real joker. which makes sense. Arthurs character was not someone who could have become a criminal mastermind. i said that after the first one.
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