Why so many women get defensive when truth is being spoken about women?

I noticed that when many guys talk about how it is the truth that women care about looks in dating, many women get all butthurt and start insulting. They also think every women out there, agrees with them on women topics. That is not true. My sister is a woman and she thinks women have it easier in the West. She is blunt. Women get even more mad when other women call out them. They are also chicken to admit that the reason why many women never had a girlfriend is cause they are ugly.
Updates:
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Correction: why many men never had a girlfriend
Why so many women get defensive when truth is being spoken about women?
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