In my country, the United States, I hear this idea from time to time. In my personal opinion, the idea that "women are hard to understand" is a) incorrect, b) an idea that MEN have, and c) gender stereotyping. PEOPLE, of either sex, are complicated and hard to understand. In my opinion, women only seem "hard to understand" if someone thinks women SHOULD be "easy to understand."

As members come here for help with their English, here is how the sentences should be written: "It is sometimes asserted that women are too difficult to understand. Are they?" As for discussion on this topic, a Discussion section is available for that purpose.

Everybody is hard to understand; men and women alike. :) Whomever said this is just using it as an excuse for feeling insecure about understanding you.

Because most of them are very talkative.