Note that the "gentlemanly" mentioned here refers to appearance and physique, not personality, and has nothing to do with "effeminate" or "sissy".
According to some recent surveys (yes, there are always some idle people who will conduct these "extremely valuable" surveys), muscle-bound men, once highly favored by women, are becoming less popular. Men who are gentlemanly, introverted, and scholarly are starting to receive more favor. Even more interestingly, besides daily life, in "private life", gentlemanly men also hold their own. Some have even suggested that gentlemanly men in the following professions perform better in bed.