Why women can't keep secrets?

It is a proven fact that women can't keep secrets. It is true for about 90% females. Does the reason belong to Hindu mythology? Did Yudhishthira curse her own mother Kunti?




After the battle of Kurukshetra, Yudhisthira performed the funeral rites for all loved ones. Then Kunti revealed a secret that Karn (Radheya) was her son. Yudhishthira got deeply hurt that Kunti did not reveal to him earlier that Karna was his brother. The depressed prince, in turn, cursed that no woman, henceforth, would be able to keep any secrets. 

Story

After the battle of Kurukshetra, Dhristarastra asked Vidura, Dhaumya and Sanjaya to make all arrangements for the cremation of the great warriors killed in the war. Karna had no sons to offer any oblations. They all had been killed. Kunti could not bear this final injustice Karna (Radheya). She called Yudhisthira and said, "One person has been left. You should offer oblations for him too." Yudhisthira was surprised. He said, "Mother how can I forget anyone who died for me? Who is that person you speak of?" 

Kunti said, "Radheya was a Kshatriya. He was the son of Surya. I am his mother. Surya had given me this child when I was a maiden, living in my father's house. Afraid of the consure of the world, I put him in a box and set it afloat on the waves of Ganga. He was found by Atiratha and his wife Radha brought him up. I am the cause of his tragic life." Saying this Kunti fainted. Now the grief of the Pandavas was unbearable. Krishna looked at Kunti and at the Pandavas with infinite
The Pandavas remembered each and every detail of his noble qualities. The Pandavas asked Kunti did Karna know about it. The answer came from Krishna, "Yes he did". Yudhisthira was very angry with her mother for the great injustice done by her to Karna. 

"He cursed the entire women race that they would not be able to hide any secret henceforth"