I think that the author means is that Harvard places a high value on "perfect code," when "just ship it," is closer to the mantra of the startup community. Goes hand-in-hand with "do things that don't scale," which is another bit that follows the same ideal of "get it out the door."

I don't think that there is any reason to rush in University though. Take time, learn the fundamentals. There is plenty of time to corner cut later.