From the article:
Nobody expects the chief executive to be reviewing computer code or hosting East Room "hackathons." But this falls on him. The CEO of a corporation or country is uniquely responsible for making sure the team is on task, and he or she is ultimately responsible if it's not. In Obama's case, did he demand thorough updates on the progress of the site? If so, did he ask the right questions? Did he put the right people on the job in the first place?
Given the horrid first days of Obamacare, the answer to at least one of those questions must be "no."