Because the people giving the interviewers were hired under the old system. Which they can't just turn on its head, all of the sudden, because that would... in

Because the people giving the interviewers were hired under the old system. Which they can't just turn on its head, all of the sudden, because that would... invalidate the exacting, methodical "high bar" which they had to pass in order to be hired (though proving their Great Developer status).