"Any posts by members calling each other out as fake, or posting comments about the validity of a members images and the likes will be considered harassment"
That's pretty clear to me that you're not allowed to question the validity of an image. It's a dumb rule that opens the door to deception, but that's what it says.
Again, could be mistaken, but I'm pretty sure by "validity of a members images" they mean it in the gender faking and/or claiming pics are of you when they are not way.
Example: Person's profile has a bunch of hot pics of a female. Another member saying, "Hey those pics aren't of you, they are of some hot chick!" is questioning the validity of their images.
Not whether they are photoshopped or not.
Could be wrong I guess. I just never read that rule to mean that. Maybe it was worded ambiguously on purpose.