(By the way: I had forgotten that Andreessen was a board member and large investor. Thanks for reminding me.)
It reads like it was written by a crisis management team, and it probably was. Apologies are most effective when they both are and are perceived as being sincere. It's fine to say pmarca stuck his foot in his mouth, it's fine to say that his expressed views are not those of facebook, and it's fine to say that facebook sincerely believes that offering a limited version of the Internet to poor people, for free, will be a great emancipator. But I think it would be a more effective apology if it came across as heartfelt, and that means leaving out what really sounds like self-serving praise for India.
I think what really bugged me is that it came across as something a politician would say. It was insincere and designed to offend as few people as possible. Which I find offensive, because it's not how real people talk. It's like the audience is being talked down to.