Was Kuina reasoning being weak because she's a woman stupid?

Obviously in real life men are physically stronger than women but this is fiction.

You have a woman as one of the emperor of the sea (big mom) or a character like Boa, Yamato or Nico Robin.

You could have gotten a devil fruit or train Haki. Get Cyborg stuffs like Franky, Vegapunk...?

If she knew about ivankov maybe ivankov could have turned her into a man?

What do y'all think?