I agree, it is very obvious that Joel would promote his own software. That's not really what I intended my post to be about though.
Joel has long said he only hires great programmers that know CS theory in and out. I don't think that's changed, he's just also identified that recent graduates are lacking in time-management and collaboration skills needed to be good industrial programmers. However, he isn't just having a debate about academic vs vocational education but offering paid internships, and now sponsoring one of these Capstone groups, in an effort to give students the skills he thinks they are missing.