Let's be honest, how many people on HN (or elsewhere) have a VP level job? Even if it is true that jobs are the very senior level are filled this way, that's a

Let's be honest, how many people on HN (or elsewhere) have a VP level job? Even if it is true that jobs are the very senior level are filled this way, that's a very small % of the total (in my company, much smaller than 1%). So that still wouldn't make the claim that "most jobs are not posted/filled by referrals" true.