That's the internet pop-psychologist interpretation, but the people actually writing him often have him doing his best to better the Gotham around him. A lot of the petty thugs he catches are given chances to redeem themselves via Wayne based welfare programs.
Bruce Wayne is not like that at all though. He's in a position where he could actually do something about the problems of Gotham City and decides to go LARPing instead.
To be fair, he beats up a bunch of rich criminals too but he whole thing is really more about his ego than about doing good.