understatement of the year. you can also include Invincible in that statement.
At the source, most comics incorporate really adult content that could be classified as "Not for children". The vast majority of movies and shows that are based on comics leave out a LOT of content to keep things at a PG-13 level because if they were true to the comics, almost all of them would rated R without any question.
Just for example, in the Batman Animated series, they went from Dick Grayson's Robin to Tim Drake and totally skipped the Jason Todd story between them because the show runners decided the Joker brutally beating the shit out of him and killing him was not something they wanted in the show.
Another one, in Iron Man 2, they depict Tony Stark drunk one night but it was his birthday so whatever. What they will never do in a movie or show is the Demon in a Bottle story where Tony is a raging alcoholic and James Rhodes has to take up the mantle of Iron Man. Yeah, real child level content that was.
It's only recent times through streaming services like HBO Max, Amazon, etc that we get comic based shows and movies that are full on adult level stuff. But all of that stuff already existed unfiltered in paper form for decades.
Sorry... nerd things. I've read a lot of comics since I was a kid.