I don't think I've seen a single positive statement about Zuckerberg's foundation. It would have been 100% fully within his right to simply keep it all, or blow his fortune on snorting Fabergé eggs, or buying classic cars and crashing them. Instead, he's giving almost all of it away. He's choosing to retain control over how it's given away? Well so what! It's still way better than keeping it all. I am no fan of Faceb…
So yeah, he might do great things with it, or he might not. We don't have much to go by, other than the fact that he's made a big announcement before he's actually willing to tell us what he's doing, which points to this being a vanity project more than anything.
Even if he does great things with it (which we have no way of knowing at the moment), it doesn't mean that he's above criticism. Some politicians will have massive turkey give-aways to boost their popularity; organized crime leaders are often known for their generosity in their communities. In the world we live in, it's worth taking a look at the person as a whole as well as what their motivations are, rather than just praising any gifts while ignoring ulterior motives.