Hard to do when he doesn't fix the other issues in Gotham and he just beats up villains lol, man needs to use his wealth to influence politics for the better
And there are stories where Gotham is literally cursed to be evil. You start pulling edge cases and you throw out everything that matters. There's probably a story where Gotham and Metropolis switched vibes and Superman is an autocrat Spaze Nazi exterminating shoplifters and petty thugs