Adults relate to the superhero, because they're empowered with agency over themselves and their environment.
These things were supposed to be for children. They have no control over anything and are supposed to look to the big strong adults to solve all their problems.
But even adults are susceptible. Lately politicians have been marketing themselves as the heroes we need to solve the problems we can't.
I was a kid once, I never thought that way. However, the politicians that have been marketing themselves as literal superheroes are also the ones I've voted against, so maybe it's a certain type of people that get that out of superhero movies. They're also the ones every modern superhero story warns against, so your point is confusing.
These things were supposed to be for children. They have no control over anything and are supposed to look to the big strong adults to solve all their problems.
But even adults are susceptible. Lately politicians have been marketing themselves as the heroes we need to solve the problems we can't.