It's still beastiality regardless of how unrealistically their behavior/artstyle may be depicted, it's fiction after all.
Just take a look at StudioFOW's animations and you'll get it
(My fav in this category is
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It's not even about disagreement, that's just a personal preference which I do understand as I myself prefer them being realistic as well instead of leaning more into furry territory but in KP, they're kinda balanced in between, they don't look too humanoid like how furry characters generally are in furry games.
It also may be done to avoid getting hit with censorship on a platform like Steam, just like how goblins can basically be a substitute to shotas as well. In the past. I originally planned on using AI to change the goblins into humans but after looking at the game assets, I dropped that idea immediately.