And I object to racism, terrorism, child abuse and violence. These issues are featured in TW, therefore it is bad. Duh.
This "dramatrically derogatory" depiction of women is mostly an obvious, tongue-in cheek irony - can't you see it? It has a place in the game, because it is a part of the world. Sapkowski's setting is inspired by legends and folklore, in which ribaldry is inherent. The books are full of rather dark and sarcastic social commentaries and quite ironic/self-ironic. There is also a lot of sex - portrayed either ironically, like in the game, or more seriously - as a tool used to exert control over othre people. I could go on and on about the books and the world portrayed in them, as well as compare it with its game adaptation, but that's not the point.
Point is - you should judge wether the setting is coherent and makes sense, and if the implementation of certain... features... makes sense design-wise. I'll give you an example - if you were to review a noir story about a hard-boiled detective, or better yet, a James Bond novel, would you go on about how sexist it is, and lower its rating for it - knowing that a certain portrayal of sex is a part of the genre?
It has nothing to do with your OWN morality.
Also, as the game goes on, the main character gets the choice to side with a strongly racist organisation and help in what effectively is a racial cleansing. He may also involve himself in terrorist activity. You don't consider it inappropriate, do you? If so, why can't you grasp the idea that the makers of the game do not endorse objectifying women and put sex in the game for reasons more important that just to show some boobs?
EDIT:
Also, apart from the fact that you didn't see enough of the game to fully review it, and the fact that some of the paragraphs are irrelevant now, because the game has been patched soon after release (it now seems MUCH more bug-free than, say, NWN2, despite all the patches...), I see a certain... lack of balance in your review. It is as if you started writing it (or even playing it) with a "this game sucks" conclusion in mind. You describe its flaws at lenght, yet only *hint* at its strong points, which usually looks like "blahblabla is quite good, BUT..." followed with an entire paragraph of describing how bad something is.