I think if his foundation wasn't accompanied by a multiple page long self-aggrandizing commitment to charity people would simply appreciate and not scrutinize.

I think if his foundation wasn't accompanied by a multiple page long self-aggrandizing commitment to charity people would simply appreciate and not scrutinize. But in particular we have a model for what it looks like when a tech billionaire tries to donate his time and money to do something good for the world instead of building widgets and does it very well: the Gates foundation. And his previous "public works" attempt was a lobbying group for "immigration reform" that claimed to try to make life better for vast swaths of people and yet was simply a front to lobby the government to let tech businesses exploit immigrant slave labor more effectively. Accompanied by a similar impassioned speech about doing good works. Most of the lobbying was in the form of pretty despicable character assassination. In particular he takes jabs at the Gates foundation for not lobbying for example. The Gates foundation is enormously successful and Zuckerberg hasn't accomplished anything. Right now all he's done is set up a company that he has control over and promised "guys, I'll give this money to 'charity' however I define it at my discretion whatever that means". I'm hopeful and at its face I think it's a wonderful thing he's pledged to do but I think it's a bit premature to fall all over ourselves thanking him for reorganizing his finances because that's all he's really done so far.