Personally, I found that having a lot of money myself brought more problems than solutions. Perhaps I'm just not good at whatever skills it takes to be rich and an effective altruist. But I'm pretty good at helping people with money decide how to spend it solving problems I care about. Now I make enough to pay other people to handle things I'm bad at, while enabling me to pursue my goals. But not more.

I don't have anything against people who pursue personal wealth in order to do social good. That's admirable. But to suggest that it's the only way to so social good (which you didn't do, but grandparent did) is just wrong.