Did you miss Policenauts, MGS1, 3, 4 and Peace Walker? If this was worse, we'd be able to zoom in the camera, snap photos and touch.
I have never played Policenauts. I have played MGS 1- 4 and about half of peacewalker. There is nothing in MGS 1-4 that compares to this, but certainly there are things that are a step down, and are generally minor things, secret things or in jest.
Quiet is not in jest. Nor is she a 2 minute joke, nor is she a poster, nor is she a spy seducing a character for major plot reasons. I am to understand that the end of PW had a half naked child in it, and even going back to the start of the game, people took issue with the xray underwear shot of a little girl, and rightly so. The more it occurs and the higher level it reaches, the more it becomes unquestionably wank fodder, and from everything so far, that is all quiet is. It damages the game, and that is not good for anyone, fans of it or not.
Even GZ had immensely questionable content, that was as shockingly out of place as it was perverse, and still none of these things excuse each other, or justify the latter, and I think that is what people saying such things miss. Just because there were some pervy things in older games, does not justify stepping that up each time a new game comes out. Did anyone buy PW thinking "great I can get panty shots in xray of a little girl?" did anyone buy Mgs 4 thinking "cool, I can whip a camera out to get model shots of bosses?" The answer for the vast majority would be no. I would like to say that the games would have not just been of equal quality, but better without their inclusion at all.
If I play a game with a woman character with a bit of cleaveage and am reasonably ok with that design, then play the sequal and she has less clothes, then play the third game and she has no clothes at all, that doesn't make the latter acceptible because of the first step on that ladder. It tarnishes them all. It tarnishes the medium, and it tarnishes you as a gamer, because this is what you are being told you want in your games, like it or not.