It's not hypocrisy. It's simply projection. She drinks her coffee 'black' as a signal that she is a stronk womyns who aint need no man so therefore she believes that anyone who drinks their coffee black is doing it as a political statement. She is striving to emulate an alpha male but fails because she can never be one and can't imagine herself as subordinate to an actual alpha male. Her fantasy is conflicting with her warped ideologies. She's poison and that guy is lucky to have her leave abruptly.