"A 10 page manifesto about his workplace? Seriously, who has the time? If I was that upset about my work I'd find a new job. Although if it afforded me the time time to write 10 pages of drivel I'd probably just keep quiet and take the money..."
Well, he did it in his own time. So far as I can tell, he really loved working at Google and was trying to do his bit to fix what he thought was wrong with the company (though, obviously, we can only speculate about his true motives). Many hi-tech companies encourage their staff to come up with ideas to improve the ways in which their company works. Was James naive and over-confident? Yes. Was he an idiot? Possibly. Did he expect to get fired? No.