Look she can parade around in a swimsuit and other costumes for no real reason than being aesthetically pleasing but having sex is just going much too far.
If nothing else, the different impact on female psychology these two activities typically produce provides us a principled basis for treating them -- and people who engage in them -- differently. To the extent that this is true, such differential treatment is not "hypocrisy."
Intuitively, for most women there is a difference between hopping in a bikini as if one were heading to the beach, issuing a silly statement about world peace or what have you, and calling it a day, and driving to a dingy hotel to get fucked and treated as an object by a stranger you don't know, respect, or aren't even necessarily attracted to, all for a small sum of cash and with the knowledge that your potentially unpleasant experience will be uploaded to the internet for an indeterminately large audience regardless of your wishes because its producers genuinely think of you as meat. Oh, and having a big wad blown in your face/hair. Ew!
That said, I don't think the (uncontroversial) fact that the two activities are significantly different and thus to be handled differently justifies shaming, which I think is extremely unproductive and, well, a shame. But let's not pretend either that porn is generally just "sex" as you and I (presumably) engage it. Perhaps some future idealized version will be as such and no principled reason will exist for treating it differently; as it stands, this isn't the case and it seems much more like yet another mechanism for projecting male dominance and the objectification of women, something that puts them "in their place."
