Think beyond Oda just using Sanji for dumb perv gags.
Sanji said what? That he wanted Stussy to call him a dog. And, rather than react badly, Stussy seemed charmed, and if anything flirted back to him.
Who was Stussy seen the most with in Whole Cake? Big News Morgans, a bird Zoan, who walks around in his Hybrid Form openly.
In Egghead, Stussy sucks the neck of Kaku in giraffe form, then sucks Lucci's neck in base, with Lucci being another Zoan.
All of Stussy's interactions in this series are with Zoans, and now she's with a Fishman, and a guy who says he'll be her dog.
Finally, Stussy clearly views Vegapunk as her creator/father, and Vegapunk wants what Big Mom wanted: for people of all races to be respected and loved. Even though Stussy is a clone, she's viewed as a real person by Vegapunk. Because of that, I imagine Stussy would be more accepting of Minks than most. It's not just that Oda is connecitng her to animals, it's that she's being shown in a sexual light while interacting with characters with animal aspects.
Everyone in this group is also connected to cloning, with Sanji's family making clones, Stussy being a clone, and Jinbei being cloned recently.
This also explains why Carrot was big in Whole Cake: she and Sanji are both children of science, connecting to cloning, who were left behind by a parental figure. This is a good place for Sanji to mature, and be a role model to Carrot.
Let's see what happens