So he will preach about wealth inequality but won't go and give his wealth to the poor, but will instead donate his time and energy telling everyone how other wealthy people should pay more.
Imagine you are in a position when something happens that you believe is unfair and you have a way to reduce that unfairness, even just a tiny bit. Wouldn't you do it?
Would you only write an editorial and not rectify it?
It would also lead by example. If others followed him, he would have helped the lives of many times that.