Uhmmmm many females have been hurt in this series
Jora
Robin
Nami
Khalifa
Female marines during the war
That mole lady from Alabasta
The lady Nami fought in Alabasta
Baby 5
Mocha and other female kids
Nami's mom
Robin's mom
Usopp's mom
Vivi
Madam Shirley
Nah man... you have it all wrong.
Jora was just overcome by Brook's amazing sense of art.
Robin.... uh, got her hands and face dirty digging on Skypia (not being hurt protecting stuff from Yama or taking lightning to the face from Enel)... She also totally just tripped a few times during Ennis Lobby.
Nami has a strong foot. And her shoulder just needed a massage during Ennis Lobby.
Khalifa's shocking personality WOULD lead one to believe she took a bolt of lightning. However, truth be told, she just fainted from the heat caused by the excess water vapor that arose during the fight.
What female Marines

. Tsuru tripped and hit her head. Hina was never hurt. The unnamed Female Giant never got hurt.
Miss Merry Christmas wanted to dig in the air. Hence bat to the face.
Miss Doublefinger merely expiramented with Ussop's Party Favor Clima-Tact
Baby-5 is currently fighting even with Sai. She simply blew herself up on Punk Hazard, and passed out from freezing temperatures (maid costume isn't useful there)
Mocha got big *insert generic thug life comment*. And candy.
Bellemere is head strong. Nothing wrong there.
Olvia is fire proof, and has Treehouse insurance. Everyone has jumped out of a tree or two before.
Ussop's Mom went to Neverland. She also was very sick in one scene
Vivi wasn't hurt. Robin just faked that gut tear. It was the Hana-Hana no mi
Madam Shirley dropped her glass bowl.... that she used to predict fortunes in a generic manner slowly narrowing it down to seem real... ugh I mean to tell Fortunes... yeah.
OT: Well, they do get hurt. They just hardly ever have all out fights like the guys do. Last time Nami or Robin took a massive shot to the face was never. Closest to that kind of thing was during Ennis Lobby.
Robin took several beatings while chained from Spandam, and also I believe a little bit of Funkfreed to the side. She also took a little bit of physical beating by Yama while she was trying to protect the ruins.
Nami took Doublefinger's spike to the foot. She took a Shigan to the shoulder.
That's about it. But yeah, you can blame it on Shonen women are weak cliche, or Male writing story doesn't want to appear abusive to females, or Fanservice is outranking legitimate fighting.... or... uhhh... One Piece females just know how to dodge
And luffy punched vivi in the face.
She had a ***** of an itch....?!
You completely ignored the video where Croc stabbed Robin.
They like playing it close to the chest.... no biggie! It was their thing... you know as the top two.