I dunno what to tell you then man. If I was hurt and scared and probably something akin to panicked and I was grabbed up by a group of strangers that started doing painful things between my legs with little explanation or preface, I can very easily see how that experience could feel very much like rape. It does not at all seem like a stretch of the imagination to me. You certainly don't have to personally agree, you are, by all means, within your right to say that YOU don't see how it would feel that way, but you certainly have no grounds to tell these women who are professing that it does feel that way to them, that in fact they are incorrect about their own subjective experience and need to describe it in terms you agree with....that's nonsense.
If I were you, if a woman told me she went through an experience that felt very much like rape, I would not scoff and tell her "no you didn't", I would take her at her word that what she just experienced made her feel assaulted and victimized, and I would take a second look at that experience and how to make it not feel that way to other women in the future, rather than lambasting them for using terms you dont like to describe their subjective experience.
Jesus man, if a woman tells you that she just had an experience that felt like rape and your first reaction is not "what can be done to change that situation" but rather to argue with her about whether or not it did feel like rape to her....then you have your priorities exactly backwards.