Well why not? They know much more than I of the problem because I don't have a website in the top whatever that generates that much traffic. I would guess that neither do you so it's worth listening to what he has to say. Each story is different and you'd be silly to ignore someone's experience on the matter if it is relevant to you.

For example who wouldn't like to hear the stories (possibly horror stories) of the early Twitter days? Even though there was lots of downtime precisely because of that reason there is a lot to learn.