Well creationists say evolution doesn't exist - Can you guess what's the flaw in the proposition? The objectification of human beings to some degree is natural and even necessary, but when people talk about objectification they mean just plain gross exaggerated and unnecessary objectification of people's bodies. Objectification of women is widely documented by literally dozens of scientific studies, as well as its nasty effects like eating disorders, unrealistic standards, etc. It isn't a problem that happens only in gaming, it happens everywhere, so gaming isn't a special case, it's just another one. The fact it seems like a small issue doesn't mean it should be underestimated because it's also useful for corporations to profit from people's unrealistic goals about physical beauty. The fact few people buy games for boobs and ass is just one more reason why it is unnecessary in the first place to exaggerate characteristics when consumers explicit demand and positively critique graphical realism - Resident Evil 5's main character Chris Redfield was horrible because of his large biceps, not only because it was unrealistic but also because those covered a big part of the screen making it slightly more difficult to aim - Seriously.
Whoever fights monsters should see to it that in the process he does not become a monster. And if you gaze long enough into an abyss, the abyss will gaze back into you