It is plenty sensitive. Just because you love being touched doesn't mean that what you are doing is okay. It would upset and discomfit me, and might even cause a self-defense type reaction. Approaching anyone from behind is threatening enough as it is.

If he wouldn't do it to a dude (and believe me, they don't) she isn't hysterical to call it out.

Please stop calling people crazy. It is offensive, stigmatizing, and also, you are full of shit. If someone touches you inappropriately, particularly if you cannot see them, taking defensive action is the safe thing to do. How does a man pulling that crap know whether or not his victim has PTSD? And even if she…

Touching people without their consent isn't a "social atmosphere."

You aren't referring to actual failure rates, but ideal failure rates. Actual failure rates are much higher. In some cases, due to user error, but in other cases due to factors outside of the user's ability to control.

It isn't just about know-how, it is about avoiding birth control failures, which is not as easy as you might think.