I've cut this paragraph of text from your post, but I didn't want to take it completely out of context. In brackets I've pasted a line of text from your earlier paragraph, so anyone reading it out of context can know what you mean by "such games." If I've read incorrectly however feel free to respond and let me know.
How "political" am I for thinking this is out of control?
I don't understand your argument that Japanese developers should not be attacked for producing games with content like the above picture. Your thesis seems to be that since the game is up-front about its intended audience, disinterested parties shouldn't take offense. Whether or not the developer is marketing its game to an intended demographic "honestly" is irrelevant. The attacks, or criticism, on the game's portrayal of women is for the sake of the medium as a whole. Whether or not you're interested in this game doesn't matter - you still stand to benefit from an industry that takes itself more seriously, and doesn't green light infantile images like the above. What's at stake is not necessarily the way a game is marketed, or whether or not it is "honest" in its representation, but rather the quality of its content. In this case, that content is a grotesque over-sexualization of its characters. It's trash, plain and simple, and deserves to be criticized for it.
Your second argument, about website's letting "biased" staff members write about the game, also doesn't hold water. Recognizing when something is over-exaggerated to the point of becoming a self-parody is part of being a critic. You're just as "biased" for pointing that out as you are "biased" against Superman 64 for being hot garbage. Criticism is inherently subjective, and one hopes to read criticism which aligns with your personal values and interests. It's often useful to read criticism from the other side of the fence as well, but hopefully a good critic is able to acknowledge all arguments and objections regardless of their personal preference.
It is not disrespectful or disingenuous to any artist to criticize their work. That's part of producing any content that is made available publicly. Furthermore, arguing that the characters in Dragon's Crown are over-sexualized to the point of absurdity is hardly a "political" stance. They look ridiculous to the point that it detracts from the game. Personally, if I put the game on the TV with the Sorceress as my character, my girlfriend walks out of the room. The sight of it disgusts her. I thank any game critic for pointing that out, because I do not want to buy a video game as unfit for public consumption as this one.