Unique and Enjoyable.
I just watched this and it was another very good DC animated film.
The main theme is that when you have a very good person, no matter what they are exposed to, what they are led to believe, and what negative things they do, they will always go back to baseline and return to being a great person.
As with so many comic book stories, it's a great message for people who have gone through troubled times.
On a funny, crappy American note, Superman eliminates poverty etc by telling people what to do via Marxism and making sure they do it. This is seen as "bad" in favor of American "choice" which is to be "free" to live in the gutter, have no money, and advantages, because we all need to make our own decisions, lol.
I was rooting for communist Superman the whole time and was like, this is great!
That's not the message though.