And your point is that Facebook isn't a product "of unambiguous value to society" I suppose? And that Zuckerberg's supposed lack of "innovation" is the cause of this deficiency?

Facebook may not be your thing, but I'd have to say the fact that tens of millions of people enjoy the benefits that Facebook brings to their lives, enough to visit the site multiple times a day pretty much proves its value to society.

And I believe pretty strongly that taking ideas that were innovated by other people and improving upon them counts as innovation in its own right. Facebook may not have done anything earth-shatteringly new, but what it did do, it did better.