Because they think it is an "own" to say that a woman caught mid-sneeze is unattractive and therefore worthless as a woman, it ties into their "theory" about feminism just being pushed by "ugly women" who can't get laid. See also: Anti-suffragette posters from the early 20th century. This is just the modern version of that. "A woman? Stepping out of line? We'd better call her ugly, that will show her!"