I could watch this all day. These people are presenting with such fundamental problems and it is fun to see them try to downplay them when questioned.
What this really highlights is that entrepreneurs aren't put face to face with someone as incisive and BS-resistant as PG or Harj nearly often enough.
Maybe there's an opportunity for an Ask Your Target Market like service which specializes in reality checks for entrepreneurs.
Someone will post a link to their startup, and everyone will be supportive and at most suggest a few wording corrections.
I'm often tempted to post "this is shit, and here is why", but I think the supportive environment of HN is valuable. I don't know what the solution is.