The point i was making was that it has happened and honestly there are still people out there that condem (rock) music for being evil and morally corrupting the youth, even without giving them the fodder that rock n roll stereotypes found in guitar hero offer.
Those same people have mostly moved on to blaming video games, and guess what Guitar Hero is? It's a perfecta (that's one less than a trifecta, if you were wondering).
Honestly, there are things in the Guitar Hero games that don't sit right with me, but to the best of my knowledge the ESRB doesn't take religious references or iconography of any kind into account. The closest content descriptors I can find that might apply are "Suggestive Themes" and "Violent References," neither of which are judged anywhere near as harshly as "Language" is. I'm sure that's a can of worms the ESRB doesn't want to open.
Regardless, in the end you'll just have to add all the F-bombs back in yourself so that the game can hold on to that lucrative T rating.
No one answered my question on how the vocals work dammit!
As far as I know, all of these singing games work by scoring you for hitting the right pitch when you're supposed to. They're no more sophisticated than that, so when there's no note for you to hit, any noise you make is just ignored. You don't even have to sing the actual words.