It’s not that they make too much noise, it’s that there’s no volume control.
The trouble with vuvuzelas is that they keep the noise level consistently high. There’s no perceptible increase or decrease of noise to go with the ebb and flow of the game. After Shabalala scored, you’d have expected the stadium to explode with noise. But watching on TV, there was absolutely no change in the sound or volume of the vuvuzelas.
I’m sure it’s different for people in the stadium, but for those of us in the stadium, the vuvuzelas actually take away from the emotion of the game.
A pity, that.