This is talking about music as if it isn't inherently based on time. If anything, a large number of consonances would make music sound much worse, because "dissonance" in many ways is simply sounds that require resolution of tension. If there is no tension, there is no resolution of tension. Dissonance is commonly believed to be the thing that actually makes music interesting.

Of course there is music that uses lots of consonance, but typically they will use some other device (rhythm, rising tones) to increase tension so they have something to resolve.