Age was just a mild reinforcement for the point I'll explain later: someone in their 30s very likely doesn't possess the experience to fully understand the deep political implications of a device like Facebook if used the wrong way. I've absolutely nothing against people in their 30s, actually I'd pay a lot to get back to that age. And by the way, the number of all girlfriends I've been with until my 30s is lower than the number of different Linux distributions I had installed on my PCs, which should qualify me as a certified nerd with flying colors:)
Language barrier doesn't help here but anyway, my point was that a single person (single as individual) is hardly given the switch to make decision that affect potentially billions of people, but when things go wrong it comes handy to be able to construct an apparent solution in the easiest way, that is, building a single scapegoat so that the public will see him/her as the only one responsible. Fire him/her = problem solved.