I actually read DC Comics

Rating: 6/10 (23 October 2019)

I think a major problem that the MCU started was that people think they can watch a movie from a major publisher and then know everything about the characters, at least, that's what I think explains the high rating for this bad film.
As someone who actually reads comics, especially Batman comics, I didn't want this movie to be made. Joker doesn't have a backstory, and you know what, that was perfect. If I can say it in his own words "I don't remember where I got these scars, but if I have to have an origin story, I prefer it to be multiple choice". This movie firstly ruined Joker's multiple choice lifestyle and secondly, just ruined the malice of the character overall.
Without spoiling anything, I will simply say that the film attempted to humanize Joker, to the extent that it wants the viewer to join in and call Batman out as a bad guy for trying to stop him. It wants you to feel sorry for the guy, Joker NEVER deserved pity, and that's what made him great for the last 70+ years.
I'm rather upset with the high rating as it is clearly a bunch of "fanboys" who don't know Joker and want to say it was great because they feel they know him now. The movie was just plain BAD. The laughing was stupid, and the acting was desperate... Heath Ledger brought joker to a new high, and Phoenix has just dropped that bar significantly.
All I can say is: If you actually knew joker, you wouldn't give this film a rating even close to what it has at the moment, and even if you don't, the movie wasn't good enough to justify it either.