As an origin story, it does a better job telling you why Joker likes to laugh, versus say, the Silence of the Lambs movies never really telling you why Hannibal likes to eat. TLDR: go see it if you like character studies.
Trigger warning: probably a horrible movie for people who are uncomfortable with ubiquitous absurdity.
I need someone else to look and tell me if the locks on the mailboxes are too shiny because the props-team forgot to age them.
[On accusations of incel triggering:] Hardly covers incel triggers. Gotham as a trope is inherently a play on class structures, so it'll feel relevant to HK/Occupy and all that. It isn't a masterful script on a line by line basis. But overall it is very nicely paced. Imho