Unless you're gonna no-true-Scotsman this, plenty of wealthy Christians are deeply unpleasant and selfish people. Going to church does not make people good.
They aren’t good Christians then, and if Christian social shame was still the dominant flavor of social shame we may not see such egregious behavior (not arguing there would be perfection, of course).
Well I’m an atheist, but it’s undeniable that Christianity used to be the dominant moral police in the west and it no longer is. If you stop enforcing morality with shame then people don’t follow it as much. Which part of that is wrong?