I don't know what the context of it is in GTA, but having played KID I can say it is only stupid. Yet, it seemed to be a defining thing that came up in every western review of the game. To the point where (I'm not sure what the website is) some website seem to call for the end of Suda 51 because of it. It really seemed to overshadow the game's posties such as the combat and style. Yet, it's kind of a small thing in the game and it's completely tongue n cheek to the point I'm not sure why anyone would be offended by it. It's such a simple joke, playing up on men looking at women's cleavage basically. Hell sounds like GTA is somewhat creepier. Now, KID is no doubt a smaller game then GTA but in KID the giglo missions are also completely optional( I did 2). It wasn't a great game, but it I truly think it got really dumb critiques because of a really kind of harmless mode. And GTAV will not get those critiques at all most likely.
I hate to do that "western journalism is BIAS against Japanese games", but since KID is fresh on my mind it just seems pretty unfair.