Wait that makes sense since its only implied it is Ste but who do you think it could be otherwise??? I guess it would make sense if it were someone connected to the rabbits...
Everytime you encounter the ones that you (and the mc) assumed it was Ste, it was actually a different horny minotaur.
(You might've forgotten (just like me) why Ste's here and he mentioned the minotaurs before.. or it was mentioned in a journey of his wife)
If you keep sucking their dick you'll lose sanity points, once you go insane there is an ending and you'll learn a bit more about them.