Yeah I know, but if these boys grow up and treat women with the same mentality ... wouldn't that worry him as a father? Again, he has 2 daughters? Does he want to be reduced to meat and good looks, too? That's so f*cked up... Oda is all about world peace and stuff, but being a pervert is okay or what? lol.
Ok. I'm gonna go just a little deep here.
Sanji.
Sanji "not hitting women" is how Oda thinks he's such a progressive and cool dude because he tries to embody a message of non-violence towards women on Sanji.
But the thing is, it's a good cause, but for the wrong reasons. Sanji was conditioned by Zeff to put women on a pedestal. He doesn't see them as human beings, he sees them as "divinities" who can do no wrong.
This is problematic as fuck, because, in real life, this creates "the good guys". People who don't know to interact with women seeing them as human beings, and end up resenting them when their feelings are not mutual.
Call it a "positive toxicity".
In Oda's head, simply "not hitting women because yes" is enough, since Oda himself apparently has a great difficulty of seeing women as complex human beings as much as anyone else.
They are beings who are more suited for "mother roles", "emotional beings", "caring creatures", etc. The basic notion that women are the "support class" for the men "hard carries".
That's why Nami has this fucking boner for being a "mother" to children, why even freaking ROBIN had a motherly approach with Momonosuke, why Toki, a time traveller from the Void Century was use as mere breeding mare and emotional support for the awesome and flawless Oden, etc.
One PIece is an extremely sexist manga EVEN pre-TS. Don't fool yourself because Nami and Robin were a little bit less worse than women in order shounen.
Accept it, filter it for the real life, and move on.
Which is why I get disgusted when I see the shallow "woke" shit of "hurr durr but sanji pervert". Nothing more than shallow excuses to justify their own "morality" like it would give them a cookie as a prize or something.
TL;DR: Oda is a hack.