I am beating a slightly different drum than the "Aguilera fucked up the Anthem" drum that is being beaten everywhere else. However, the fact that the drums are being beaten at all is the sign of a larger problem.
The performance of the American National Anthem is about honoring our Nation. It should have nothing to do with who leads it, nor should it have anything to do with the venue in which it is performed.
By tradition, The Star-Spangled Banner is performed or The Pledge of Allegiance is recited prior to every sporting event from the varsity (high school) level through college and to the professional leagues. My school's band will lead it at Friday night's home basketball game. It will not be about me (and I cringe when I'm recognized) nor my students nor the game. It will be about honoring America. That's where the focus is to be, and that focus has the force of law, as Congress has released several guidelines for the performance of the Anthem.
What we're talking about here is who performed it and how she goofed it up. We're also talking about how she stylized it to her own musical tastes. All of these things cause us to cease honoring America and cause the performance of the Anthem to be about Aguilera. That's wrong. It's also why my kids daren't fuck up the Anthem either. When we get it right, it's about honoring America. If we flub it, it ceases to honor America and it becomes about our mistake. People can discuss my mistakes til the day I die, but I don't want to create a situation where my actions cause the spotlight to go from honoring the nation to being on me.
This is why I'm advocating for having a service band lead the Anthem. They don't allow the focus to be on them. It's on the honoring America, as it should be.