See, here's what I don't get about this sort of kerfuffle. Consider an alternative scene that wouldn't have made anyone bat an eyelash;
--> Hand reaches out from behind the door, pulls bulb horn, clown nose, and pointy hat out of bag. Door closes. Gasp and giggle sound effects come from behind door in last frame. <---
Okay? Not a peep, right?
And yet, what's going on there is behavior far far weirder and more abnormal than the scene that people complained about. And it's still not something I'd have a problem with.
I dunno. I may be a weirdo but when it's not exploitation, nor deception, nor coercion, and the characters have real personalities, my usual response is a lot the same as my response to a cute couple walking hand in hand on the beach. "Awww, that's sweet...."