I think the larger problem is that is marketing is near ignored and not just by engineers either. Not many people want to talk to potential customers or users to see if there's product market fit, so they don't talk and listen to anyone outside of the friends and their team which is a huge mistake when they just go ahead and build. This is why I feel that Product Hunt's various hack fest events are more valuable than YC's virtual startup school. Product Hunt's hackfests are ingenious marketing classes in disguise. Product Hunt really forces you in a methodical way to market your product before it's built. What most people don't realize is that it's so important to build an audience before you finish building your product. Ryan Hoover and Co are right: "Build it and they will come" in most cases is a myth.