I suppose some men can't believe that women simply won't do what they are told, unless they say they are feminist.
The absolute joy to this entire issue is how many women, who weren't particularly interested in feminism, have become radical feminists by being exposed to such blatant misogyny.
You can identify as a feminist, say you are supporting feminism, and understand the statistics, but until you see exactly how widespread sexism and misogyny is, you're still not quite looking through the matrix.
That continuous clunking is the sound of the scales falling, for women everywhere.