The fact that Batman is an ultra wealthy 1 % which dishes out justice with his expensive toys while hiding from most of the authorities is also quite a message.

It’s not uncommon. Green Arrow the same.

The popular ones with extra-human abilities - Flash, Superman, Spiderman, Captain America, etc, have more normal backgrounds.

Boys with toys though - Batman, Ironman, The Atom, are the 1%. Ant Man I guess is more normal, but he stole his suit (but Hank Pym was reasonably normal too)