That's perfectly true, but we ARE the only audience when it comes to the audience Harmonix was supposedly trying to reach with this asinine nerf decision. Even if we assume that the "average player gets 4 stars" stat isn't total bunk, that only undermines Harmonix's stated justification, because that means that the average players have literally no chance of ever being competitive in tournaments whether Flames are nerfed or not. Which is actually true regardless of that stat. There are really only a handful of players who are good enough at the game, no matter what is done to the powerups, to truly fight for the top two spots. We've seen that time and time again already.
Like it or not, a game has to be accessable on some level to everyone without being too easy. Sure, it's too easy for us hardcore players to GS songs (though I can't GS a few in my library still), but we're not the only audience.