I'm not saying I agree with the person you responded to, particularly since I'm someone who'll probably end up buying this game, but let me explain as best I can. I want to because I think laughing and asking if someone's being serious is pretending there's no rational basis for it, and I don't agree with that.
Someone who surrounds themselves with fantasy depictions of hyper-sexualized, almost inhuman-looking characters with equally bizarre and artificial behaviors is very easy to misunderstand from the outside. Depending on your age, these characters can look a little on the young-side, and nubility is played up to a deliberate level. So much effort is put into fan-servicy focuses that it's easy to make the case that it's at the expense of other elements. To many, that would appear to be a fantasy motivated by either (a) discomfort with normal people and interactions or (b) a wish that normal people and interactions would resemble that bizarre fantasy. I get that. You might notice that this description sounds a whole lot how someone might describe pornography. I think this stuff gets criticized more savagely than pornography by people I'd normally take seriously.
Just as we might enjoy any creative work for different reasons, people are within their rights to question our motivations for liking it. Chances are, a lot of the time they're completely wrong. Others, they may have a point. That's why we need to have this stuff out there: because the reactions and the conversations around it are what influences people over time.
To give an exaggerated example, if I saw someone's Livejournal series of fan-fic stories about the American South rising again and subjugating all blacks, I would think less of them. That's a fantasy at the expense of a group of people, which I think even conceptually is pretty monstrous. Re: the genre of titillating media we're talking about here, many people look at these sorts of depictions in games (and conversely, anime) and feel that it's a fantasy at the expense of women, because it diminishes them to a preposterous point of sexual objectification. This has varying degrees of accuracy, depending on the individual work.