I am walking thin ground here, but that's something I could even agree could on some way be validly argued. However, you chose a completely wrong example for that. *Lunatic*, n. One whose delusions are out of fashion.
John Crook was elected a fellow of the British Academy in 1970, but resigned in 1980 over the academy's failure to expel the art historian and traitor, Anthony Blunt.
Emphasis mine.
