Only one person fights organized crime, others prefer to sit and suffer. It is also shown as a bad thing because this person is basically an outlaw vigilante, but considering others doing nothing, it is a hypocritic position.
As an example, a hero plays video games and drinks alcohol, he is also visibly fatter than five years ago. Another got a daughter, he also stopped any heroics—this daughter will be shown as a liability later in the movie. We can see that most of the good guys don’t have a family. But the big bad Thanos has daughters, and they are considered a liability. Good guys don’t have liabilities like this. It may promote solitude and infantilism, Tony Stark is especially good at promoting this. He mostly plays around thinking he can fix most things with his money.
While during the course of film good guys do many things to return the half of humanity that vanished, it all starts with a rat. This rat accidentally presses a button, which returns Ant-man to the normal size, who proposes the idea of time travel to the remaining Avengers, who start fixing things.
Scientific approach looks laughable in the movie: Stark simulates time travel with his artificial intelligence, making it looks like he personally does very little. Later Stark’s artificial intelligence and other systems can’t warn heroes of Thanos’ strike from the orbit. And Banner decided to experiment on a human, not on an animal, while trying to make time travel work. It looks very odd considering Banner experiments on a fellow hero, who can help in a fight later.
Thanos finally made several shots from the orbit, but later he landed his troops anyway. So he for some reason doesn’t use all his resources while he can. And heroes are saved later by Captain Marvel, who was suspiciously absent in the previous movie, but she appears like that rat I mentioned when the plot has called for her.
Summarizing, this movie like the previous one promotes infantilism and individualism, not social connections and family values. Heroes tend to act as they want and doesn’t have any leader. They still don’t plan well: only one plan somehow worked, but mostly thanks to the rat and Captain Marvel. Scientific discoveries become a source of jokes. So the movie like the previous one shows many bad decisions and examples, which can lead to viewers’ bad decisions.