I've called out interviewers for stupid puzzle questions multiple times. Never got the job in any case, but I like to think I improved the hiring process marginally before being rejected.
I've also called out crappy interviews - while in the interview. I went on to be offered the job - but declined.
Heh, I would imagine they just found fellow aristocrats who had seen the puzzle questions before and whose groupthinking conformity was a perfect match for the companies.