This is a great piece and is deservingly getting the attention it deserves. And I agree wholeheartedly with one of the central premises: that there is a generation of Internet users unfamiliar with its more open past and therefore unaware of the benefits of that era.
This quote stood out to me, however: "The primary fallacy that underpins many of their mistakes is that user flexibility and control necessarily lead to a user experience complexity that hurts growth."
You don't establish why you think this is a fallacy and I'm interested in hearing more. I don't *necessarily* think flexibility and control lead to complexity but there is more truth than not to that notion.