Yes, and it's even weirder and more disturbing when you think about the film as essentially real life dramatized with video game tropes. If battling the exes represents dealing with your partner's past, or some such, then defeating her ex-girlfriend by making her orgasm is just...baffling and creepy beyond all reason. Especially since Ramona suggested it.

Yeah, I was waiting all movie for him to apologize to Knives! But I felt bad for Knives. She sent Scott off to be with Ramona because he'd been fighting for her, but she'd been fighting just as hard for him.