Wow, I'm always amazed at how uncaring and unwelcoming some people in this hobby can be. Sometimes Pinside can feel like 4chan or other off-the-rails sites.
Yes, it's a cartoon monkey. Yes, it's terrible artwork. But that's not what matters at all. If your argument of why it should stay is based on either of those two things, then you should be just as comfortable with it not being there and the decision by AP should just roll off your back as hey, "it doesn't offend me so what do I care." If the decision of it being removed still offends you, then you really don't care to understand why it's harmful to those that have been sexually assaulted and the hobby as a whole.
As AP has stated, this wasn't meant to be an adult themed game with tons of male-centric, hetero rapey fantasies. It's a family game.
If you had something traumatic happen to you or someone you loved and they were constantly reminded about it (not just one instance with a monkey) in their favorite hobby, you'd hopefully wonder why that has to keep happening. If you then found out that everyone in that family-friendly hobby kept telling them to suck it up, their problem isn't real, I didn't see it so it didn't happen, etc. you'd hopefully start wondering why that isn't changing.
This KEEPS happening in pinball and the women are speaking up and telling you to your faces that it's real. Don't scoff and dismiss it just because you like a "cheeky monkey". If you don't give a damn about women and victims of sexual assault, just say that. Otherwise, why wouldn't you just accept that even though it doesn't apply to you, you could see how it doesn't fit or better the hobby?